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Vulnerability record · CVE-2026-11322 · published 4 June 2026

CVE-2026-11322: Link following vulnerability

Hermes WebUI prior to v0.51.221 contains a path traversal vulnerability that allows attackers to escape the workspace boundary by supplying symlinks that resolve to files or directories outside the designated workspace root. Attackers can exploit the workspace file and listing APIs, which resolve symlink targets without enforcing that the final path remains within the workspace, to read external host files accessible to the server process and disclose sensitive data such as SSH keys, cloud credentials, or application tokens.

7.1 CVSS 4.0 High EPSS 0.32% · top 77.2% CWE-59 · Link following Deferred
7.1CVSS 4.0 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
22 Jul 2026Last modified by NVD

Description

Hermes WebUI prior to v0.51.221 contains a path traversal vulnerability that allows attackers to escape the workspace boundary by supplying symlinks that resolve to files or directories outside the designated workspace root. Attackers can exploit the workspace file and listing APIs, which resolve symlink targets without enforcing that the final path remains within the workspace, to read external host files accessible to the server process and disclose sensitive data such as SSH keys, cloud credentials, or application tokens.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/nesquena/hermes-webui/commit/7c48c376299b8058fd35127a59aefadded7e4a92
https://github.com/nesquena/hermes-webui/pull/3398
https://www.vulncheck.com/advisories/hermes-webui-before-path-traversal-via-symlink-workspace-bypass
https://github.com/nesquena/hermes-webui/pull/3398

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Source: NIST National Vulnerability Database (record CVE-2026-11322), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.