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VulnerabilityPublished Updated

CVE-2024-50343: symfony · Improper Input Validation

Affects symfonySource GCVE Database

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Not known to be exploited · CVSS 3.1 Low · fixed in 7.1.4 : update symfony when convenient.

Data as of 30 Oct 2026, 00:05 UTC

CVSS 3.1 base score
3.1Low
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (GitHub_M)CVSS 3.13.1
Patch
Available – fixed in 7.1.4, 6.4.11, 5.4.43
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Nov 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade symfony to 7.1.4, 6.4.11 or 5.4.43.

Affected software

ProductAffectedFixed in
symfony symfonyAffected
  • <5.4.43
  • >=6.0.0 <6.4.11
  • >=7.0.0 <7.1.4
Fixed in
  • 5.4.43
  • 6.4.11
  • 7.1.4

AI-suggested

Upgrade symfony/validator to version 5.4.43, 6.4.11, or 7.1.4 or later where the issue is fixed by applying the D regex modifier. There are no known workarounds for this vulnerability, so upgrading is the recommended and only effective mitigation.

Description

CVE-2024-50343 is an improper input validation vulnerability in the symfony/validator component of the Symfony PHP framework. The issue allows bypassing a Validator configured with regular expressions using the $ metacharacter when the input ends with a newline character. This flaw affects versions prior to 5.4.43, 6.4.11, and 7.1.4. The vulnerability has been fixed by introducing the D regex modifier to ensure the entire input is matched.

References

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