Vulnerability in Nesquena Hermes-webui
CVE-2026-49958
Hermes WebUI before version 0.51.303 contains a time-of-check time-of-use (TOCTOU) race condition vulnerability in the git_discard function within api/workspace_git.py that allows attackers to delete files outside the configured workspace…
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
EPSS: 0.001 (0.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:H.
Affected products
- Nesquena Hermes-webui — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (patch)
- disclosure@vulncheck.com (issue-tracking, technical-description)
- disclosure@vulncheck.com (issue-tracking)
- disclosure@vulncheck.com (release-notes)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-49958?
- CVE-2026-49958 is a medium-severity vulnerability in Nesquena Hermes-webui, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 5.0/10. Published 2026-06-09.
- How severe is CVE-2026-49958?
- Medium severity. CVSS v3 base score is 5.0 out of 10.