🛡️ CVE-2026-49958
🟡 CVSS 5.0 — Medium ✅ No Known Exploit CWE-367 NVD
5.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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 boundary by replacing a validated path component with a symlink after validation but before deletion. Attackers can substitute a workspace-controlled path component with a symlink pointing to an external directory between the safe_resolve_ws() validation step and the subsequent Path.unlink() or shutil.rmtree() deletion call, causing the delete operation to follow the symlink and remove arbitrary files outside the workspace.

Details

Severity MEDIUM
CVSS Score 5.0
CVSS Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:H
CWE CWE-367
Public Exploit ✅ No
Source NVD
Published 2026-06-09
Updated 2026-06-10
Modified 2026-06-09
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

Similar Threats

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