7.5
CVE-2026-33691
- EPSS 2.17%
- Veröffentlicht 02.04.2026 15:03:52
- Zuletzt bearbeitet 18.04.2026 20:16:29
- Quelle security-advisories@github.com
- CVE-Watchlists
- Unerledigt
LoginOWASP CRS: Whitespace padding in filenames bypasses file upload extension checks
The OWASP core rule set (CRS) is a set of generic attack detection rules for use with compatible web application firewalls. Prior to versions 3.3.9 and 4.25.0, a bypass was identified in OWASP CRS that allows uploading files with dangerous extensions (.php, .phar, .jsp, .jspx) by inserting whitespace padding in the filename (e.g. photo. php or shell.jsp ). The affected rules do not normalize whitespace before evaluating the file extension regex, so the dot-extension check fails to match. This issue has been patched in versions 3.3.9 and 4.25.0.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Owasp ≫ Owasp Modsecurity Core Rule Set Version < 3.3.9
Owasp ≫ Owasp Modsecurity Core Rule Set Version >= 4.0.0 < 4.25.0
| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 2.17% | 0.801 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| nvd@nist.gov | 7.5 | 3.9 | 3.6 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
|
| security-advisories@github.com | 6.8 | 2.2 | 4 |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
|
CWE-178 Improper Handling of Case Sensitivity
The product does not properly account for differences in case sensitivity when accessing or determining the properties of a resource, leading to inconsistent results.
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https://github.com/coreruleset/coreruleset/security/advisories/GHSA-rw5f-9w43-gv2w
https://github.com/coreruleset/coreruleset/pull/4546
https://github.com/coreruleset/coreruleset/pull/4547
https://github.com/coreruleset/coreruleset/pull/4548
https://github.com/coreruleset/coreruleset/commit/2a8c63512811c5dd74472becebb79a783e68ff02
https://github.com/coreruleset/coreruleset/releases/tag/v3.3.9
https://github.com/coreruleset/coreruleset/releases/tag/v4.25.0
http://www.openwall.com/lists/oss-security/2026/03/29/2
http://seclists.org/fulldisclosure/2026/Apr/0
http://www.openwall.com/lists/oss-security/2026/04/18/4