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Vulnerability details: VCID-grxm-dpcv-37d9
Vulnerability ID VCID-grxm-dpcv-37d9
Aliases CVE-2020-5275
GHSA-g4m9-5hpf-hx72
Summary Firewall configured with unanimous strategy was not actually unanimous in Symfony Description ----------- On Symfony before 4.4.0, when a `Firewall` checks an access control rule (using the unanimous strategy), it iterates over all rule attributes and grant access only if *all* calls to the `accessDecisionManager` decide to grant access. As of Symfony 4.4.0, a bug was introduced that prevents the check of attributes as soon as `accessDecisionManager` decide to grant access on one attribute. Resolution ---------- The `accessDecisionManager` is now called with all attributes at once, allowing the unanimous strategy being applied on each attribute. The patch for this issue is available [here](https://github.com/symfony/symfony/commit/c935e4a3fba6cc2ab463a6ca382858068d63cebf) for the 4.4 branch. Credits ------- I would like to thank Antonio J. García Lagar for reporting & Robin Chalas for fixing the issue.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-285 Improper Authorization
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-863 Incorrect Authorization
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00274 https://api.first.org/data/v1/epss?cve=CVE-2020-5275
epss 0.00274 https://api.first.org/data/v1/epss?cve=CVE-2020-5275
epss 0.00274 https://api.first.org/data/v1/epss?cve=CVE-2020-5275
epss 0.00274 https://api.first.org/data/v1/epss?cve=CVE-2020-5275
epss 0.00274 https://api.first.org/data/v1/epss?cve=CVE-2020-5275
epss 0.00274 https://api.first.org/data/v1/epss?cve=CVE-2020-5275
epss 0.00274 https://api.first.org/data/v1/epss?cve=CVE-2020-5275
epss 0.00274 https://api.first.org/data/v1/epss?cve=CVE-2020-5275
epss 0.00274 https://api.first.org/data/v1/epss?cve=CVE-2020-5275
epss 0.00274 https://api.first.org/data/v1/epss?cve=CVE-2020-5275
epss 0.00274 https://api.first.org/data/v1/epss?cve=CVE-2020-5275
epss 0.00274 https://api.first.org/data/v1/epss?cve=CVE-2020-5275
epss 0.00274 https://api.first.org/data/v1/epss?cve=CVE-2020-5275
epss 0.00274 https://api.first.org/data/v1/epss?cve=CVE-2020-5275
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-g4m9-5hpf-hx72
cvssv3.1 7.6 https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2020-5275.yaml
generic_textual HIGH https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2020-5275.yaml
cvssv3.1 7.6 https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2020-5275.yaml
generic_textual HIGH https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2020-5275.yaml
cvssv3.1 7.6 https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2020-5275.yaml
generic_textual HIGH https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2020-5275.yaml
cvssv3.1 7.6 https://github.com/symfony/symfony/commit/c935e4a3fba6cc2ab463a6ca382858068d63cebf
generic_textual HIGH https://github.com/symfony/symfony/commit/c935e4a3fba6cc2ab463a6ca382858068d63cebf
cvssv3.1 7.6 https://github.com/symfony/symfony/security/advisories/GHSA-g4m9-5hpf-hx72
cvssv3.1_qr HIGH https://github.com/symfony/symfony/security/advisories/GHSA-g4m9-5hpf-hx72
generic_textual HIGH https://github.com/symfony/symfony/security/advisories/GHSA-g4m9-5hpf-hx72
cvssv3.1 7.6 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/C36JLPHUPKDFAX6D5WYFC4ALO2K7RDUQ
generic_textual HIGH https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/C36JLPHUPKDFAX6D5WYFC4ALO2K7RDUQ
cvssv2 5.5 https://nvd.nist.gov/vuln/detail/CVE-2020-5275
cvssv3.1 7.6 https://nvd.nist.gov/vuln/detail/CVE-2020-5275
cvssv3.1 8.1 https://nvd.nist.gov/vuln/detail/CVE-2020-5275
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2020-5275
cvssv3.1 7.6 https://symfony.com/cve-2020-5275
generic_textual HIGH https://symfony.com/cve-2020-5275
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2020-5275
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5275
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2020-5275.yaml
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2020-5275.yaml
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2020-5275.yaml
https://github.com/symfony/symfony/commit/c935e4a3fba6cc2ab463a6ca382858068d63cebf
https://github.com/symfony/symfony/security/advisories/GHSA-g4m9-5hpf-hx72
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C36JLPHUPKDFAX6D5WYFC4ALO2K7RDUQ/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/C36JLPHUPKDFAX6D5WYFC4ALO2K7RDUQ
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/C36JLPHUPKDFAX6D5WYFC4ALO2K7RDUQ/
https://nvd.nist.gov/vuln/detail/CVE-2020-5275
https://symfony.com/cve-2020-5275
961415 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=961415
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:*:*:*:*:*:*:*:*
GHSA-g4m9-5hpf-hx72 https://github.com/advisories/GHSA-g4m9-5hpf-hx72
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2020-5275.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:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2020-5275.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:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2020-5275.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:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N Found at https://github.com/symfony/symfony/commit/c935e4a3fba6cc2ab463a6ca382858068d63cebf
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:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N Found at https://github.com/symfony/symfony/security/advisories/GHSA-g4m9-5hpf-hx72
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:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N Found at https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/C36JLPHUPKDFAX6D5WYFC4ALO2K7RDUQ
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:L/Au:S/C:P/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-5275
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:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-5275
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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-5275
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:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N Found at https://symfony.com/cve-2020-5275
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 0.50685
EPSS Score 0.00274
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:00:15.389204+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/03/GHSA-g4m9-5hpf-hx72/GHSA-g4m9-5hpf-hx72.json 38.0.0