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*.
Metrics
Affected Vendors & Products
References
History
Wed, 28 Oct 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Wed, 21 Oct 2026 00:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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*. | |
| Title | Coraza before 3.8.1 Multipart filename* Charset Handling FILES Rule Bypass | |
| First Time appeared |
Coraza
Coraza coraza |
|
| Weaknesses | CWE-20 | |
| CPEs | cpe:2.3:a:coraza:coraza:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Coraza
Coraza coraza |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-10-21T00:37:03.229Z
Updated: 2026-10-28T13:51:32.918Z
Reserved: 2026-10-20T21:47:43.312Z
Link: CVE-2026-114101
Updated: 2026-10-28T13:51:27.073Z
Status : Awaiting Analysis
Published: 2026-10-21T01:17:35.740
Modified: 2026-10-28T14:16:57.230
Link: CVE-2026-114101
No data.