What’s Vulnerable › Vulnerabilities
CVE-2021-36377
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.6% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2021-07-12 · updated 2026-06-17
- Weakness: CWE-295
Description
Fossil before 2.14.2 and 2.15.x before 2.15.2 often skips the hostname check during TLS certificate validation.
Affected products
- Fedoraproject Fedora: 34
- Fossil-Scm Fossil: before 2.14.2; from 2.15.0 before 2.15.2 — fixed in 2.14.2, 2.15.2
How to fix
Upgrade to a fixed version: Fossil-Scm Fossil 2.14.2, 2.15.2. Check the vendor advisory for mitigations.
References
- https://fossil-scm.org/forum/forumpost/8d367e16f53d93c789d70bd3bf2c9587227bbd5c6a7b8e512cccd79007536036
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JBTRZ5HCOUTIIKJF3T37NORI4P7EVYCY/
- https://fossil-scm.org/forum/forumpost/8d367e16f53d93c789d70bd3bf2c9587227bbd5c6a7b8e512cccd79007536036
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JBTRZ5HCOUTIIKJF3T37NORI4P7EVYCY/
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