Is CVE-2026-53871 actively exploited?

No active exploitation of CVE-2026-53871 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-53871 be exploited remotely?

Yes. CVE-2026-53871 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-53871?

CVE-2026-53871 has a CVSS score of 8.1 (HIGH).

HOME VULNERABILITIESCVE-2026-53871

HIGH

CVE-2026-53871

CWE-565Published: June 17, 2026· Updated: Jun 18, 2026

8.1

CVSS v3.1

Official Description

Hermes WebUI before 0.51.368 contains an authorization bypass vulnerability in the get_profile_cookie() function that accepts unauthenticated profile names from the hermes_profile cookie. An authenticated attacker can forge the hermes_profile cookie value to bypass profile-scoped authorization checks and access sessions, files, and resources across different profiles.

NVD Source

Technical Analysis

CVE-2026-53871 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 8.1.