Is CVE-2026-58122 actively exploited?

No active exploitation of CVE-2026-58122 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-58122 be exploited remotely?

Yes. CVE-2026-58122 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-58122?

CVE-2026-58122 has a CVSS score of 9.1 (CRITICAL).

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CRITICAL

CVE-2026-58122

CWE-348Published: July 9, 2026· Updated: Jul 14, 2026

9.1

CVSS v3.1

EPSS:0.29%probability of exploitation in 30 daysPercentile:21.1th

Official Description

Hermes WebUI before 0.51.307 contains an authentication bypass vulnerability that allows unauthenticated remote attackers to circumvent local-origin IP restrictions on onboarding endpoints by supplying a spoofed X-Forwarded-For header with a loopback address. Attackers can exploit this bypass to perform server-side request forgery against internal services including cloud metadata endpoints, overwrite LLM provider configuration and API keys with attacker-controlled values, or initiate OAuth device-code flows to obtain persistent access tokens stored in auth.json.

NVD Source

Risk Analysis

Hermes WebUI before 0.51.307 is vulnerable to a critical authentication bypass that allows unauthenticated remote attackers to circumvent local-origin IP restrictions. By spoofing the X-Forwarded-For header, attackers can perform server-side request forgery, overwrite LLM provider configurations, or obtain persistent access tokens. This vulnerability has a CVSSv3.1 score of 9.1, indicating severe risk.

No public exploit is currently known for this vulnerability. The flaw is remotely exploitable without authentication, making it a high-risk target if an exploit emerges.

Recommended Action

Upgrade Hermes WebUI to version 0.51.307 or later to address this authentication bypass. Implement robust validation of all HTTP headers, especially those related to client IP addresses, and ensure proper access controls are in place.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2026-58122 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.1.