CVE-2026-22677 Details
Description
Hermes WebUI prior to 0.51.44 contains a path traversal vulnerability in the session import endpoint that allows authenticated attackers to read arbitrary files by importing a crafted session with an unrestricted workspace value. Attackers can supply a blocked filesystem root in the workspace field and subsequently use relative paths in the session file API to access any file readable by the WebUI process.
A path traversal vulnerability has been identified in Hermes WebUI versions prior to 0.51.44 - Release T. This vulnerability allows authenticated attackers to read arbitrary files by importing a crafted session with an unrestricted workspace value. Attackers can exploit this by supplying a blocked filesystem root in the workspace field and using relative paths in the session file API to access any file that is readable by the WebUI process.
Users are advised to update to Hermes WebUI version 0.51.44 or later, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 13, 2026CISA-ADP
Assessed May 14, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/nesquena/hermes-webui/pull/2048 | CISA-ADP | Issue TrackingVendor |
| https://github.com/nesquena/hermes-webui/commit/f00cb74f776f22f02f5eb6b39dfb389f87cc7fd3 | [email protected] | Source CodeVendor |
| https://github.com/nesquena/hermes-webui/pull/2048 | [email protected] | Issue TrackingVendor |
| https://github.com/nesquena/hermes-webui/releases/tag/v0.51.44 | [email protected] | Release NotesVendor |
| https://www.vulncheck.com/advisories/hermes-webui-path-traversal-via-session-import-endpoint | [email protected] | AdvisoryRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Hermes WebUI | All versions |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 14, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 26, 2026 | CVE Modified | [email protected] |
| May 14, 2026 | CVE Modified | CISA-ADP |
| May 13, 2026 | New CVE Received | [email protected] |