CVE WATCH / VULNERABILITY DETAIL
CVE-2026-121623
UNKNOWNCVSS 0NVD feed
Published 6 November 2026 · tracked since 7 November 2026
Description
The Symfony Serializer component DataUriNormalizer::denormalize() matches the data: scheme with a case-sensitive regular expression, allowing a value with an uppercase scheme, such as DATA:,/../../../etc/passwd, to bypass it, resulting in Arbitrary Local File Read through Path Traversal in Symfony v
References
- NVD — National Vulnerability Database
- CVE.org record (MITRE)
- CISA Known Exploited Vulnerabilities catalog