CVE-2020-5283
XSS vulnerability in CVS show_subdir_lastmod support
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Low3.1 | CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:N |
| NVDNVD · Modified | 3.1 | Low3.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 1.4% · top 28% of all CVEs (6 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.1.
Weakness
Affected products
References (4)
- https://github.com/viewvc/viewvc/security/advisories/GHSA-xpxf-fvqv-7mfg (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/viewvc/viewvc/issues/211 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/viewvc/viewvc/commit/ad0f966e9a997b17d853a6972ea283d4dcd70fa8 (opens in a new tab)x_refsource_MISCx_transferred
- FEDORA-2020-c952520959 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-5283)Record last updated .