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Vulnerability details: VCID-9kvc-6wbe-1fdf
Vulnerability ID VCID-9kvc-6wbe-1fdf
Aliases CVE-2018-11406
GHSA-g4g7-q726-v5hg
Summary Symfony CSRF Token Fixation An issue was discovered in the Security component in Symfony 2.7.x before 2.7.48, 2.8.x before 2.8.41, 3.3.x before 3.3.17, 3.4.x before 3.4.11, and 4.0.x before 4.0.11. By default, a user's session is invalidated when the user is logged out. 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.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-352 Cross-Site Request Forgery (CSRF)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00194 https://api.first.org/data/v1/epss?cve=CVE-2018-11406
cvssv3.1 8.8 https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-bundle/CVE-2018-11406.yaml
generic_textual HIGH https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-bundle/CVE-2018-11406.yaml
cvssv3.1 8.8 https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2018-11406.yaml
generic_textual HIGH https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2018-11406.yaml
cvssv3.1 8.8 https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2018-11406.yaml
generic_textual HIGH https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2018-11406.yaml
cvssv3.1 8.8 https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2018-11406.yaml
generic_textual HIGH https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2018-11406.yaml
cvssv3.1 8.8 https://github.com/symfony/symfony
generic_textual HIGH https://github.com/symfony/symfony
cvssv3.1 8.8 https://github.com/symfony/symfony/commit/319e1bdd43979d9c1559497de8d69adea28ab8d1
generic_textual HIGH https://github.com/symfony/symfony/commit/319e1bdd43979d9c1559497de8d69adea28ab8d1
cvssv3.1 8.8 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/G4XNBMFW33H47O5TZGA7JYCVLDBCXAJV
generic_textual HIGH https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/G4XNBMFW33H47O5TZGA7JYCVLDBCXAJV
cvssv3.1 8.8 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBQK7JDXIELADIPGZIOUCZKMAJM5LSBW
generic_textual HIGH https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBQK7JDXIELADIPGZIOUCZKMAJM5LSBW
cvssv3.1 8.8 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WU5N2TZFNGXDGMXMPP7LZCWTFLENF6WH
generic_textual HIGH https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WU5N2TZFNGXDGMXMPP7LZCWTFLENF6WH
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2018-11406
cvssv3 8.8 https://nvd.nist.gov/vuln/detail/CVE-2018-11406
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2018-11406
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2018-11406
cvssv3.1 8.8 https://symfony.com/blog/cve-2018-11406-csrf-token-fixation
generic_textual HIGH https://symfony.com/blog/cve-2018-11406-csrf-token-fixation
cvssv3.1 8.8 https://symfony.com/cve-2018-11406
generic_textual HIGH https://symfony.com/cve-2018-11406
cvssv3.1 8.8 https://www.debian.org/security/2018/dsa-4262
generic_textual HIGH https://www.debian.org/security/2018/dsa-4262
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2018-11406
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2403
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16652
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16653
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16654
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16790
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11385
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11386
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11406
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-bundle/CVE-2018-11406.yaml
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2018-11406.yaml
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2018-11406.yaml
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2018-11406.yaml
https://github.com/symfony/symfony
https://github.com/symfony/symfony/commit/319e1bdd43979d9c1559497de8d69adea28ab8d1
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G4XNBMFW33H47O5TZGA7JYCVLDBCXAJV/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UBQK7JDXIELADIPGZIOUCZKMAJM5LSBW/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WU5N2TZFNGXDGMXMPP7LZCWTFLENF6WH/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/G4XNBMFW33H47O5TZGA7JYCVLDBCXAJV
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBQK7JDXIELADIPGZIOUCZKMAJM5LSBW
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WU5N2TZFNGXDGMXMPP7LZCWTFLENF6WH
https://nvd.nist.gov/vuln/detail/CVE-2018-11406
https://symfony.com/blog/cve-2018-11406-csrf-token-fixation
https://symfony.com/cve-2018-11406
https://www.debian.org/security/2018/dsa-4262
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-bundle/CVE-2018-11406.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2018-11406.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2018-11406.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2018-11406.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/symfony/symfony
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/symfony/symfony/commit/319e1bdd43979d9c1559497de8d69adea28ab8d1
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/G4XNBMFW33H47O5TZGA7JYCVLDBCXAJV
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBQK7JDXIELADIPGZIOUCZKMAJM5LSBW
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WU5N2TZFNGXDGMXMPP7LZCWTFLENF6WH
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2018-11406
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-11406
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-11406
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://symfony.com/blog/cve-2018-11406-csrf-token-fixation
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://symfony.com/cve-2018-11406
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://www.debian.org/security/2018/dsa-4262
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.41791
EPSS Score 0.00194
Published At June 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-01T12:28:31.198139+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-g4g7-q726-v5hg/GHSA-g4g7-q726-v5hg.json 36.1.3