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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
nesquena hermes-webui affected
Version Status Constraints
0 affected < 0.51.311

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/nesquena/hermes-webui/commit/938ac9f55b53def1eefb48c4c42dabaf9c22e99c cve-icon cve-icon
https://github.com/nesquena/hermes-webui/pull/3776 cve-icon cve-icon
https://github.com/nesquena/hermes-webui/releases/tag/v0.51.311 cve-icon cve-icon
https://www.vulncheck.com/advisories/hermes-webui-rce-via-git-configuration-injection cve-icon cve-icon
History

Tue, 09 Jun 2026 17:15:00 +0000

Type Values Removed Values Added
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.
Title Hermes WebUI < 0.51.311 RCE via Git Configuration Injection
Weaknesses CWE-78
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-06-09T16:46:03.502Z

Reserved: 2026-06-02T16:30:15.233Z

Link: CVE-2026-49959

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-06-09T17:17:49.370

Modified: 2026-06-09T19:36:10.547

Link: CVE-2026-49959

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-09T21:00:08Z

Weaknesses