bleach.clean behavior parsing style attributes could result in a regular expression denial of service (ReDoS). Calls to bleach.clean with an allowed tag with an allowed style attribute are vulnerable to ReDoS. For example, bleach.clean(..., attributes={'a': ['style']}).
References
| Link | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1623633 | Exploit Issue Tracking |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1623633 | Exploit Issue Tracking |
| https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmm | Vendor Advisory |
| https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmm | Vendor Advisory |
Configurations
History
19 Mar 2025, 16:15
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://bugzilla.mozilla.org/show_bug.cgi?id=1623633 - Exploit, Issue Tracking | |
| References | () https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmm - Vendor Advisory |
Information
Published : 2023-02-16 22:15
Updated : 2025-03-19 16:15
NVD link : CVE-2020-6817
Mitre link : CVE-2020-6817
JSON object : View
Products Affected
mozilla
- bleach
CWE
CWE-1333
Inefficient Regular Expression Complexity