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CVE-2024-50343

Incorrect response from Validator when input ends with `\n` in symfony/validator

Published: Nov 6, 2024Updated: Nov 3, 2025 Sources: CVE List NVD GHSA BDUCWE-20
3.1LOW
NVD MITRE
EPSS Score
0.5%
Top 63.1%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
Patch Available
Self-Check
OpenVAS

Description

symfony/validator is a module for the Symphony PHP framework which provides tools to validate values. It is possible to trick a `Validator` configured with a regular expression using the `$` metacharacters, with an input ending with `\n`. Symfony as of versions 5.4.43, 6.4.11, and 7.1.4 now uses the `D` regex modifier to match the entire input. Users are advised to upgrade. There are no known workarounds for this vulnerability.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:LUI:NS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-20

Affected Products

Packagist
package-ecosystem
symfony/symfony
OSS Libraries
symfony/validator
OSS Libraries
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
ООО «Ред Софт»
commercial·RUaka red soft
РЕД ОСOn-premOS
Operating Systems / linux-distro
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
Astra Linux Special EditionOn-premOS
Operating Systems / linux-distro
SensioLabs, symfony community
oss-project·FRaka twig, symfony
SymfonyLibrary
OSS Libraries / web-framework
symfony
oss-projectaka symfony framework, twig (related)
symfonyLibrary
OSS Libraries / web-framework

Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
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References

https://github.com/symfony/symfony/commit/7d1032bbead9a4229b32fa6ebca32681c80cb76f
github.com
https://github.com/symfony/symfony/security/advisories/GHSA-g3rh-rrhp-jhh9
github.com
https://lists.debian.org/debian-lts-announce/2025/05/msg00051.html
lists.debian.org
and 13 more references View all →
News mentions
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