CVEvulnerability
CVE-2020-6816
6.1 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-03-24
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.1 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:P/A:N
- Weaknesses
- CWE-79
Description
In Mozilla Bleach before 3.12, a mutation XSS in bleach.clean when RCDATA and either svg or math tags are whitelisted and the keyword argument strip=False.
Affected configurations
• mozilla bleach (< 3.1.2)
• fedoraproject fedora 33
Related
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness
References
- https://advisory.checkmarx.net/advisory/CX-2020-4277 Exploit, Third Party Advisory
- https://github.com/mozilla/bleach/security/advisories/GHSA-m6xf-fq7q-8743 Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EDQU2SZLZMSSACCBUBJ6NOSRNNBDYFW5/ lists.fedoraproject.org
- https://www.checkmarx.com/blog/vulnerabilities-discovered-in-mozilla-bleach Exploit, Third Party Advisory
- https://advisory.checkmarx.net/advisory/CX-2020-4277 Exploit, Third Party Advisory
- https://github.com/mozilla/bleach/security/advisories/GHSA-m6xf-fq7q-8743 Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EDQU2SZLZMSSACCBUBJ6NOSRNNBDYFW5/ lists.fedoraproject.org
- https://www.checkmarx.com/blog/vulnerabilities-discovered-in-mozilla-bleach Exploit, Third Party Advisory