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OpenAdvisories
High · 8.8 CVE-2026-49959 EUVD-2026-35707GHSA-69x8-4j5h-mmr4

Hermes WebUI < 0.51.311 RCE via Git Configuration Injection

Published Jun 9, 2026 · Updated Nov 8, 2026 · Assigned by VulnCheck

Description

Hermes WebUI before version 0.51.311 contains a remote code execution vulnerability that allows authenticated attackers to execute arbitrary commands by placing malicious executable Git configuration in a workspace repository's .git/config file. Attackers can exploit Git subprocess invocations in api/workspace_git.py through vectors such as core.fsmonitor during git status, protocol.ext.allow with ext:: remotes during git fetch, credential.helper, core.askPass, core.gitProxy, or inherited environment variables including GIT_SSH_COMMAND to achieve arbitrary command execution on the host running the application.

Affected products

VendorProductAffectedFixed
nesquena hermes-webui < 0.51.311 0.51.311

References