CVE-2020-5283
LOW EPSS 64.8%
Published Apr 3, 20206y ago · Modified Jun 17, 20262w ago
3.5 CVSS 3.1
Published Apr 3, 2020 6y ago
Last Modified Jun 17, 2026 2w ago
Description
ViewVC before versions 1.1.28 and 1.2.1 has a XSS vulnerability in CVS show_subdir_lastmod support. The impact of this vulnerability is mitigated by the need for an attacker to have commit privileges to a CVS repository exposed by an otherwise trusted ViewVC instance that also has the `show_subdir_lastmod` feature enabled. The attack vector involves files with unsafe names (names that, when embedded into an HTML stream, would cause the browser to run unwanted code), which themselves can be challenging to create. This vulnerability is patched in versions 1.2.1 and 1.1.28.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction Required
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None
Threat Intelligence
EPSS Exploit Probability
64.8% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available
Weaknesses 2
CWE-79 Cross-site Scripting Injection
CWE-80
Affected Products 2
References 4
- github.com https://github.com/viewvc/viewvc/commit/ad0f966e9a997b17d853a6972ea283d4dcd70fa8
- github.com https://github.com/viewvc/viewvc/issues/211
- github.com https://github.com/viewvc/viewvc/security/advisories/GHSA-xpxf-fvqv-7mfg
- lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2Q2STF2MKT24HXZ3YZIU7CN6F6QM67I5/
Remediation
- github.com https://github.com/viewvc/viewvc/commit/ad0f966e9a997b17d853a6972ea283d4dcd70fa8
- github.com https://github.com/viewvc/viewvc/security/advisories/GHSA-xpxf-fvqv-7mfg