CVE-2020-6817
7.5HIGHbleach.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
Published: 2/16/2023Updated: 3/19/2025
Description
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']}).
AI AnalysisPowered by AI
Affected Products
mozillableach
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1623633ExploitIssue Tracking
- https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmmVendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1623633ExploitIssue Tracking
- https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmmVendor Advisory