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Description

Hermes WebUI prior to 0.51.44 - Release T 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.

PUBLISHED Reserved 2026-01-08 | Published 2026-05-13 | Updated 2026-05-14 | Assigner VulnCheck




MEDIUM: 6.0CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Problem types

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

Default status
affected

Any version before 0.51.44
affected

f00cb74f776f22f02f5eb6b39dfb389f87cc7fd3 (git)
unaffected

Credits

Chia Min Jun Lennon finder

References

github.com/nesquena/hermes-webui/pull/2048 exploit

github.com/nesquena/hermes-webui/releases/tag/v0.51.44 release-notes

github.com/nesquena/hermes-webui/pull/2048 issue-tracking

github.com/...ommit/f00cb74f776f22f02f5eb6b39dfb389f87cc7fd3 patch

www.vulncheck.com/...h-traversal-via-session-import-endpoint third-party-advisory

cve.org (CVE-2026-22677)

nvd.nist.gov (CVE-2026-22677)

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