Dashboard / CVE-2026-49959

CVE-2026-49959

HIGH
MEDIUM Priority: 0.08 BB Relevance: 68/100
Published: 2026-06-09 Modified: 2026-11-08 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
AT: None
VC: High
VI: High
VA: High

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
nesquena hermes-webui 0 < 0.51.311

References & Advisories (4)

Bug Bounty Relevance

68 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

8.7 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.95%
Raw Score 0.009450
Percentile 61.6%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00945
2026-11-12
0.00945
2026-11-10
0.00945
2026-11-09
0.00945
2026-11-08
0.00945

Intelligence Sources

mitre ref →

External Links