Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-g3rh-rrhp-jhh9
Advisory ID github_osv/GHSA-g3rh-rrhp-jhh9
Aliases CVE-2024-50343
Summary Symfony has an incorrect response from Validator when input ends with `\n` ### Description It is possible to trick a `Validator` configured with a regular expression using the `$` metacharacters, with an input ending with `\n`. ### Resolution Symfony now uses the `D` regex modifier to match the entire input. The patch for this issue is available [here](https://github.com/symfony/symfony/commit/7d1032bbead9a4229b32fa6ebca32681c80cb76f) for branch 5.4. ### Credits We would like to thank Offscript for reporting the issue and Alexandre Daubois for providing the fix.
Status Published
Exploitability 0.5
Weighted Severity 2.8
Risk 1.4
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (1)
CWE-20 Improper Input Validation
System Score Found at
cvssv3.1 3.1 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/11/GHSA-g3rh-rrhp-jhh9/GHSA-g3rh-rrhp-jhh9.json
cvssv4 2.3 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/11/GHSA-g3rh-rrhp-jhh9/GHSA-g3rh-rrhp-jhh9.json
generic_textual LOW
Reference id Reference type URL
https://github.com/symfony/symfony
https://github.com/symfony/symfony/commit/7d1032bbead9a4229b32fa6ebca32681c80cb76f
https://lists.debian.org/debian-lts-announce/2025/05/msg00051.html
CVE-2024-50343 https://nvd.nist.gov/vuln/detail/CVE-2024-50343
CVE-2024-50343 https://symfony.com/cve-2024-50343
CVE-2024-50343.YAML https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2024-50343.yaml
CVE-2024-50343.YAML https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/validator/CVE-2024-50343.yaml
GHSA-g3rh-rrhp-jhh9 https://github.com/symfony/symfony/security/advisories/GHSA-g3rh-rrhp-jhh9
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/11/GHSA-g3rh-rrhp-jhh9/GHSA-g3rh-rrhp-jhh9.json
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:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/11/GHSA-g3rh-rrhp-jhh9/GHSA-g3rh-rrhp-jhh9.json
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-11-07T15:25:47Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2024/50xxx/CVE-2024-50343.json

Source Advisory: vulnrichment/CVE-2024-50343

View SSVC decision tree 
[{'Exploitation': 'none'},
 {'Automatable': 'no'},
 {'Technical Impact': 'partial'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]