CVE Watch14 jul 2026

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

CVSS

5.0

Medio

EPSS

0.1%

KEV

—

Exploit Today

0-100

Publicado: 9 jun 2026 · Última mod.: 14 jul 2026 · CWE-367

EPSS · 30d

0.1%EPSS · 30 días0.1%

2026-06-302026-07-16

Descripción técnica

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.

Referencias oficiales

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