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This behavior can be disabled through the `invalidate_session` option. In this case, CSRF tokens were not erased during logout which allowed for CSRF token fixation.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2018-11406","reference_id":"","reference_type":"","scores":[{"value":"0.00184","scoring_system":"epss","scoring_elements":"0.3992","published_at":"2026-05-30T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2018-11406"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2403","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2403"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16652","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16652"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16653","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16653"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16654","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16654"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16790","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16790"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11385","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11385"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11386","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11386"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11406","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11406"},{"reference_url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-bundle/CVE-2018-11406.yaml","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-bundle/CVE-2018-11406.yaml"},{"reference_url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2018-11406.yaml","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2018-11406.yaml"},{"reference_url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2018-11406.yaml","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2018-11406.yaml"},{"reference_url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2018-11406.yaml","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2018-11406.yaml"},{"reference_url":"https://github.com/symfony/symfony","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/symfony/symfony"},{"reference_url":"https://github.com/symfony/symfony/commit/319e1bdd43979d9c1559497de8d69adea28ab8d1","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/symfony/symfony/commit/319e1bdd43979d9c1559497de8d69adea28ab8d1"},{"reference_url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/G4XNBMFW33H47O5TZGA7JYCVLDBCXAJV","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.fedoraproject.org/archives/list/p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ony@3.3.17"},{"url":"http://public2.vulnerablecode.io/api/packages/54811?format=json","purl":"pkg:composer/symfony/symfony@3.4.11","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-59sy-m44r-h3gn"},{"vulnerability":"VCID-5txj-xsnq-ducf"},{"vulnerability":"VCID-a9gt-63v3-vbdf"},{"vulnerability":"VCID-m1y3-csp4-aqe4"},{"vulnerability":"VCID-mbd5-rsax-jya9"},{"vulnerability":"VCID-n1c7-yabu-jye7"},{"vulnerability":"VCID-vysf-2cxd-zqe2"},{"vulnerability":"VCID-w8s1-z3hu-8beh"},{"vulnerability":"VCID-wnu2-cmrt-bkhr"},{"vulnerability":"VCID-yasp-usps-xkc3"},{"vulnerability":"VCID-zmrn-3fbj-gqcm"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:composer/symfony/symfony@3.4.11"},{"url":"http://public2.vulnerablecode.io/api/packages/54812?format=json","purl":"pkg:composer/symfony/symfony@4.0.11","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-59sy-m44r-h3gn"},{"vulnerability":"VCID-5txj-xsnq-ducf"},{"vulnerability":"VCID-a9gt-63v3-vbdf"},{"vulnerability":"VCID-m1y3-csp4-aqe4"},{"vulnerability":"VCID-mbd5-rsax-jya9"},{"vulnerability":"VCID-n1c7-yabu-jye7"},{"vulnerability":"VCID-vysf-2cxd-zqe2"},{"vulnerability":"VCID-w8s1-z3hu-8beh"},{"vulnerability":"VCID-wnu2-cmrt-bkhr"},{"vulnerability":"VCID-x8xk-7pga-33hz"},{"vulnerability":"VCID-yasp-usps-xkc3"},{"vulnerability":"VCID-zmrn-3fbj-gqcm"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:composer/symfony/symfony@4.0.11"}],"aliases":["CVE-2018-11406","GHSA-g4g7-q726-v5hg"],"risk_score":null,"exploitability":"0.5","weighted_severity":"0.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-7cdk-bmdh-2fde"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/12861?format=json","vulnerability_id":"VCID-d814-yjkr-p3ga","summary":"Attacker can read all files content on the server\nWhen a form is submitted by the user, the request handler classes of the Form component merge POST data (known as the `$_POST` array in plain PHP) and uploaded files data (known as the `$_FILES` array in plain PHP) into one array. This big array forms the data that are then bound to the form. At this stage there is no difference anymore between submitted POST data and uploaded files. A user can send a crafted HTTP request where the value of a `FileType` is sent as normal `POST` data that could be interpreted as a locale file path on the server-side (for example, `file:///etc/passwd`). If the application did not perform any additional checks about the value submitted to the `FileType`, the contents of the given file on the server could have been exposed to the attacker.","references":[{"reference_url":"http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16790","reference_id":"","reference_type":"","scores":[],"url":"http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16790"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2017-16790","reference_id":"","reference_type":"","scores":[{"value":"0.00686","scoring_system":"epss","scoring_elements":"0.7204","published_at":"2026-05-30T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2017-16790"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2403","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2403"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16652","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16652"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16653","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16653"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16654","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16654"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16790","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16790"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11385","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11385"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11386","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11386"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11406","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11406"},{"reference_url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/form/CVE-2017-16790.yaml","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/form/CVE-2017-16790.yaml"},{"reference_url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2017-16790.yaml","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2017-16790.yaml"},{"reference_url":"https://github.com/symfony/form","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/symfony/form"},{"reference_url":"https://github.com/symfony/symfony/pull/24993","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/symfony/symfony/pull/24993"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2017-16790","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-16790"},{"reference_url":"https://symfony.com/blog/cve-2017-16790-ensure-that-submitted-data-are-uploaded-files","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://symfony.com/blog/cve-2017-16790-ensure-that-submitted-data-are-uploaded-files"},{"reference_url":"https://symfony.com/cve-2017-16790","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://symfony.com/cve-2017-16790"},{"reference_url":"https://www.debian.org/security/2018/dsa-4262","reference_id":"","reference_type":"","scores":[{"value":"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attacker can navigate to arbitrary directories via the dot-dot-slash attack\nThis package includes various bundle readers that are used to read resource bundles from the local filesystem. The `read()` methods of these classes use a path and a locale to determine the language bundle to retrieve. The locale argument value is commonly retrieved from untrusted user input (like a `URL` parameter). 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17-16653.yaml","reference_id":"CVE-2017-16653.YAML","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-csrf/CVE-2017-16653.yaml"},{"reference_url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2017-16653.yaml","reference_id":"CVE-2017-16653.YAML","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2017-16653.yaml"},{"reference_url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2017-16653.yaml","reference_id":"CVE-2017-16653.YAML","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2017-16653.yaml"},{"reference_url":"https://github.com/advisories/GHSA-92x6-h2gr-8gxq","reference_id":"GHSA-92x6-h2gr-8gxq","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-92x6-h2gr-8gxq"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/54828?format=json","purl":"pkg:composer/symfony/symfony@2.7.38","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-59sy-m44r-h3gn"},{"vulnerability":"VCID-5txj-xsnq-ducf"},{"vulnerability":"VCID-7cdk-bmdh-2fde"},{"vulnerability":"VCID-8627-nvyk-w7fu"},{"vulnerability":"VCID-a9gt-63v3-vbdf"},{"vulnerability":"VCID-kx25-m1mp-zfay"},{"vulnerability":"VCID-mbd5-rsax-jya9"},{"vulnerability":"VCID-n1c7-yabu-jye7"},{"vulnerability":"VCID-n4kq-nskp-1qar"},{"vulnerability":"VCID-vysf-2cxd-zqe2"},{"vulnerability":"VCID-w8s1-z3hu-8beh"},{"vulnerability":"VCID-wnu2-cmrt-bkhr"},{"vulnerability":"VCID-yasp-usps-xkc3"},{"vulnerability":"VCID-zmrn-3fbj-gqcm"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:composer/symfony/symfony@2.7.38"},{"url":"http://public2.vulnerablecode.io/api/packages/54829?format=json","purl":"pkg:composer/symfony/symfony@2.8.31","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-59sy-m44r-h3gn"},{"vulnerability":"VCID-5txj-xsnq-ducf"},{"vulnerability":"VCID-7cdk-bmdh-2fde"},{"vulnerability":"VCID-8627-nvyk-w7fu"},{"vulnerability":"VCID-a9gt-63v3-vbdf"},{"vulnerability":"VCID-kx25-m1mp-zfay"},{"vulnerability":"VCID-m1y3-csp4-aqe4"},{"vulnerability":"VCID-mbd5-rsax-jya9"},{"vulnerability":"VCID-n1c7-yabu-jye7"},{"vulnerability":"VCID-n4kq-nskp-1qar"},{"vulnerability":"VCID-tpgm-tx2g-4bh2"},{"vulnerability":"VCID-vysf-2cxd-zqe2"},{"vulnerability":"VCID-w8s1-z3hu-8beh"},{"vulnerability":"VCID-wnu2-cmrt-bkhr"},{"vulnerability":"VCID-yasp-usps-xkc3"},{"vulnerability":"VCID-zmrn-3fbj-gqcm"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:composer/symfony/symfony@2.8.31"},{"url":"http://public2.vulnerablecode.io/api/packages/54830?format=json","purl":"pkg:composer/symfony/symfony@3.2.14","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-59sy-m44r-h3gn"},{"vulnerability":"VCID-5txj-xsnq-ducf"},{"vulnerability":"VCID-7cdk-bmdh-2fde"},{"vulnerability":"VCID-8627-nvyk-w7fu"},{"vulnerability":"VCID-a9gt-63v3-vbdf"},{"vulnerability":"VCID-kx25-m1mp-zfay"},{"vulnerability":"VCID-m1y3-csp4-aqe4"},{"vulnerability":"VCID-mbd5-rsax-jya9"},{"vulnerability":"VCID-n1c7-yabu-jye7"},{"vulnerability":"VCID-n4kq-nskp-1qar"},{"vulnerability":"VCID-tpgm-tx2g-4bh2"},{"vulnerability":"VCID-w8s1-z3hu-8beh"},{"vulnerability":"VCID-wnu2-cmrt-bkhr"},{"vulnerability":"VCID-x8xk-7pga-33hz"},{"vulnerability":"VCID-yasp-usps-xkc3"},{"vulnerability":"VCID-zmrn-3fbj-gqcm"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:composer/symfony/symfony@3.2.14"},{"url":"http://public2.vulnerablecode.io/api/packages/54831?format=json","purl":"pkg:composer/symfony/symfony@3.3.13","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-59sy-m44r-h3gn"},{"vulnerability":"VCID-5txj-xsnq-ducf"},{"vulnerability":"VCID-7cdk-bmdh-2fde"},{"vulnerability":"VCID-8627-nvyk-w7fu"},{"vulnerability":"VCID-a9gt-63v3-vbdf"},{"vulnerability":"VCID-kx25-m1mp-zfay"},{"vulnerability":"VCID-m1y3-csp4-aqe4"},{"vulnerability":"VCID-mbd5-rsax-jya9"},{"vulnerability":"VCID-n1c7-yabu-jye7"},{"vulnerability":"VCID-n4kq-nskp-1qar"},{"vulnerability":"VCID-tpgm-tx2g-4bh2"},{"vulnerability":"VCID-vysf-2cxd-zqe2"},{"vulnerability":"VCID-w8s1-z3hu-8beh"},{"vulnerability":"VCID-w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Under some configurations and with a well-crafted payload, it was possible to do a denial of service on a Symfony application without too much 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