Coraza before 3.8.1 extracts multipart upload filenames with Go's mime.ParseMediaType, which silently ignores RFC 5987 filename* parameters whose charset is not utf-8 or us-ascii. Unauthenticated attackers can send a decoy filename with filename*=iso-8859-1''shell.php, or filename* alone, so FILES-based rules never see the real name, letting dangerous uploads reach backends that honor filename*.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Public exploits 2
- anywaye/nilepatch-coraza-bypass PoC on GitHub
- cafaye/nilepatch-coraza-bypass PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Change history 5
- StatusAwaiting Analysis → PublishedNVD modified 2026-10-28 13:51
- StatusPublished → Awaiting AnalysisNVD modified 2026-10-28 14:16
- StatusAwaiting Analysis → PublishedNVD modified 2026-10-28 13:51
- StatusReceived → Awaiting AnalysisNVD modified 2026-10-22 17:34
- First seenCVSS 6.3NVD modified 2026-10-21 01:17
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.