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.
CVE-2024-50343
LOWNVD 3.13.1—
EchelonGraph scoreMEDIUM confidence
This low-severity CVE scores 3.1 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 52% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, nvd
3.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 3.1Exploit: NoneExposed: 0
A fix is available — apply it.
- CVSS v3
- 3.1
- EG Score
- 3.1(medium)
- EPSS
- 37.2%
- KEV
- Not listed
Published
November 6, 2024
Last Modified
April 15, 2026
References (3)
- security-advisories@githubhttps://github.com/symfony/symfony/commit/7d1032bbead9a4229b32fa6ebca32681c80cb76f
- security-advisories@githubhttps://github.com/symfony/symfony/security/advisories/GHSA-g3rh-rrhp-jhh9
- af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/05/msg00051.html
Frequently asked(5)
What is CVE-2024-50343?
CVE-2024-50343 is a low vulnerability published on November 6, 2024. 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…
When was CVE-2024-50343 disclosed?
CVE-2024-50343 was first published in the National Vulnerability Database on November 6, 2024, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-50343 actively exploited?
CVE-2024-50343 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 37.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-50343?
CVE-2024-50343 has a CVSS v3 base score of 3.1 (NVD).
How do I remediate CVE-2024-50343?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-50343, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2024-50343
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