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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
NVD MITRE
3.1CVSSLOW
EPSS Score
0.5%
Top 63.4%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
Patch Available

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.

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
Open in CVSS calculator →

Weaknesses

CWE-20

Affected Products

Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
Astra Linux Special EditionООО «РусБИТех-Астра»
On-premOS
Operating Systems / linux-distro
SymfonySensioLabs, symfony community
Library
OSS Libraries / web-framework
symfonysymfony
Library
OSS Libraries / web-framework
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
ооо «ред софт»commercialRUOperating Systemsaka red soft
ооо «русбитех-астра»commercialRUOperating Systemsaka rusbitech-astra
sensiolabs, symfony communityoss-projectFROSS Librariesaka symfony, twig
symfonyoss-projectOSS Librariesaka symfony framework, twig (related)
and 2 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

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

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://github.com/symfony/symfony/commit/7d1032bbead9a4229b32fa6ebca32681c80cb76f
github.com
https://github.com/symfony/symfony/security/advisories/GHSA-g3rh-rrhp-jhh9
github.com
https://nvd.nist.gov/vuln/detail/CVE-2024-50343
nvd.nist.gov
and 13 more references View all →

Timeline

Published
Nov 6, 2024
Last Updated
Nov 3, 2025

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