CVE-2026-58122

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-10. a secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.1Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.1
EG Score
9.1(high)
EPSS
21.1%
KEV
Not listed

Published

July 9, 2026

Last Modified

July 10, 2026

Advisory Details (4)

Auto-updated Jul 9, 2026
Patch available. Sources: github_release, github_pr, github_commit.
generic

Hermes WebUI < 0.51.307 Authentication Bypass via X-Forwarded-For Header Spoofing | Advisories | VulnCheck

https://www.vulncheck.com/advisories/hermes-webui-authentication-bypass-via-x-forwarded-for-header-spoofing
github_commit Patch Available

commit 70596e6993be (nesquena/hermes-webui)

Patch available: nesquena/hermes-webui v0.51.915 (contains commit 70596e6993be)

https://github.com/nesquena/hermes-webui/commit/70596e6993be0d4cee083c1c1a86f5e7ad5d57b7
github_pr

fix: harden WebUI security-sensitive defaults

Upstream fix in progress (PR #3758 · nesquena/hermes-webui, state=closed)

https://github.com/nesquena/hermes-webui/pull/3758
github_release Patch Available

v0.51.307

Patch available: nesquena/hermes-webui v0.51.307

https://github.com/nesquena/hermes-webui/releases/tag/v0.51.307

Vendor Advisories for CVE-2026-58122(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 28× in last 7d / 28× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-12 00:08 UTCEG score recompute
  2. 2026-07-12 00:08 UTCGHSA enrichment
  3. 2026-07-11 19:55 UTCEG score recompute
  4. 2026-07-11 19:55 UTCGHSA enrichment
  5. 2026-07-11 15:43 UTCEG score recompute
  6. 2026-07-11 15:43 UTCGHSA enrichment
  7. 2026-07-11 11:31 UTCEG score recompute
  8. 2026-07-11 11:30 UTCGHSA enrichment
  9. 2026-07-11 08:27 UTCEPSS rescore
  10. 2026-07-11 08:27 UTCEPSS rescore
  11. 2026-07-11 07:18 UTCEG score recompute
  12. 2026-07-11 07:18 UTCGHSA enrichment
  13. 2026-07-11 03:06 UTCEG score recompute
  14. 2026-07-11 03:06 UTCGHSA enrichment
  15. 2026-07-10 22:54 UTCEG score recompute
  16. 2026-07-10 22:54 UTCGHSA enrichment
  17. 2026-07-10 18:42 UTCEG score recompute
  18. 2026-07-10 18:42 UTCGHSA enrichment
  19. 2026-07-10 14:30 UTCEG score recompute
  20. 2026-07-10 14:30 UTCGHSA enrichment
  21. 2026-07-10 10:18 UTCEG score recompute
  22. 2026-07-10 10:18 UTCGHSA enrichment
  23. 2026-07-10 06:07 UTCEG score recompute
  24. 2026-07-10 06:06 UTCGHSA enrichment
  25. 2026-07-10 01:53 UTCEG score recompute
Show 3 more
  1. 2026-07-10 01:53 UTCGHSA enrichment
  2. 2026-07-09 21:41 UTCEG score recompute
  3. 2026-07-09 21:40 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-58122?
CVE-2026-58122 is a critical vulnerability published on July 9, 2026. 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…
When was CVE-2026-58122 disclosed?
CVE-2026-58122 was first published in the National Vulnerability Database on July 9, 2026, with the most recent update on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58122 actively exploited?
CVE-2026-58122 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 21.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-58122?
CVE-2026-58122 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-58122?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58122, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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