CVE-2026-11322: nesquena hermes webui Link Following

Vulnerability summary

CVE-2026-11322 is a high (CVSS 7.1) Link Following vulnerability in nesquena hermes webui. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 24.1% of scored vulnerabilities.

Timeline

1. 04-06-2026
   PublishedVulnerability first disclosed.
2. 14-07-2026
   Last modifiedVulnerability information updated.

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.

• CWE-59Improper Link Resolution Before File Access ('Link Following')The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.