CVE-2026-22677
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.
Does this matter?
Lower severity and a low EPSS score (0.38%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 4.0
- 6.0 MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/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/M
- EPSS
- 0.38% probability · 31th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Source
- disclosure@vulncheck.com
References
- https://github.com/nesquena/hermes-webui/commit/f00cb74f776f22f02f5eb6b39dfb389f87cc7fd3
- https://github.com/nesquena/hermes-webui/pull/2048
- https://github.com/nesquena/hermes-webui/releases/tag/v0.51.44
- https://www.vulncheck.com/advisories/hermes-webui-path-traversal-via-session-import-endpoint
- https://github.com/nesquena/hermes-webui/pull/2048
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.