CVE-2026-58123

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-10. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

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

Hermes WebUI before 0.51.788 contains an unauthenticated remote code execution vulnerability that allows remote attackers to execute arbitrary shell commands by accessing the embedded terminal API endpoints without credentials. Attackers can create a session, attach a PTY shell, and write arbitrary commands through the terminal input endpoint to achieve full command execution as the server process user via four sequential unauthenticated HTTP requests.

CVSS v3
9.8
EG Score
9.8(high)
EPSS
56.4%
KEV
Not listed

Published

July 9, 2026

Last Modified

July 10, 2026

Advisory Details (4)

Auto-updated Jul 11, 2026
Patch available. Sources: github_commit, github_pr, github_release.
generic

Hermes WebUI < 0.51.788 Unauthenticated RCE via Terminal API | Advisories | VulnCheck

https://www.vulncheck.com/advisories/hermes-webui-unauthenticated-rce-via-terminal-api
github_release Patch Available

v0.51.788

Patch available: nesquena/hermes-webui v0.51.788

https://github.com/nesquena/hermes-webui/releases/tag/v0.51.788
github_pr

fix(security): gate embedded-terminal endpoints to local origins when auth disabled

Upstream fix in progress (PR #5268 · nesquena/hermes-webui, state=closed)

https://github.com/nesquena/hermes-webui/pull/5268
github_commit Patch Available

commit d257e5f36cfa (nesquena/hermes-webui)

Patch available: nesquena/hermes-webui v0.51.915 (contains commit d257e5f36cfa)

https://github.com/nesquena/hermes-webui/commit/d257e5f36cfa9328600c8bde6f0de09a6ad9b6f4

Vendor Advisories for CVE-2026-58123(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 60× in last 7d / 60× 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. 2026-07-14 06:52 UTCEG score recompute
  2. 2026-07-14 06:52 UTCGHSA enrichment
  3. 2026-07-14 02:49 UTCEG score recompute
  4. 2026-07-14 02:49 UTCGHSA enrichment
  5. 2026-07-13 22:47 UTCEG score recompute
  6. 2026-07-13 22:47 UTCGHSA enrichment
  7. 2026-07-13 22:31 UTCEPSS rescore
  8. 2026-07-13 18:45 UTCEG score recompute
  9. 2026-07-13 18:45 UTCGHSA enrichment
  10. 2026-07-13 14:43 UTCEG score recompute
  11. 2026-07-13 14:43 UTCGHSA enrichment
  12. 2026-07-13 10:41 UTCEG score recompute
  13. 2026-07-13 10:41 UTCGHSA enrichment
  14. 2026-07-13 06:38 UTCEG score recompute
  15. 2026-07-13 06:38 UTCGHSA enrichment
  16. 2026-07-13 06:13 UTCEPSS rescore
  17. 2026-07-13 06:13 UTCEPSS rescore
  18. 2026-07-13 02:33 UTCEG score recompute
  19. 2026-07-13 02:33 UTCGHSA enrichment
  20. 2026-07-12 22:31 UTCEG score recompute
  21. 2026-07-12 22:30 UTCGHSA enrichment
  22. 2026-07-12 18:28 UTCEG score recompute
  23. 2026-07-12 18:28 UTCGHSA enrichment
  24. 2026-07-12 14:26 UTCEG score recompute
  25. 2026-07-12 14:26 UTCGHSA enrichment
Show 35 more
  1. 2026-07-12 10:22 UTCEG score recompute
  2. 2026-07-12 10:21 UTCGHSA enrichment
  3. 2026-07-12 06:18 UTCEG score recompute
  4. 2026-07-12 06:18 UTCGHSA enrichment
  5. 2026-07-12 05:46 UTCEPSS rescore
  6. 2026-07-12 02:16 UTCEG score recompute
  7. 2026-07-12 02:16 UTCGHSA enrichment
  8. 2026-07-11 22:14 UTCEG score recompute
  9. 2026-07-11 22:14 UTCGHSA enrichment
  10. 2026-07-11 18:12 UTCEG score recompute
  11. 2026-07-11 18:12 UTCGHSA enrichment
  12. 2026-07-11 14:09 UTCEG score recompute
  13. 2026-07-11 14:09 UTCGHSA enrichment
  14. 2026-07-11 10:05 UTCEG score recompute
  15. 2026-07-11 10:05 UTCGHSA enrichment
  16. 2026-07-11 08:27 UTCEPSS rescore
  17. 2026-07-11 08:27 UTCEPSS rescore
  18. 2026-07-11 06:02 UTCEG score recompute
  19. 2026-07-11 06:01 UTCGHSA enrichment
  20. 2026-07-11 01:59 UTCEG score recompute
  21. 2026-07-11 01:59 UTCGHSA enrichment
  22. 2026-07-10 21:57 UTCEG score recompute
  23. 2026-07-10 21:57 UTCGHSA enrichment
  24. 2026-07-10 17:54 UTCEG score recompute
  25. 2026-07-10 17:54 UTCGHSA enrichment
  26. 2026-07-10 13:52 UTCEG score recompute
  27. 2026-07-10 13:51 UTCGHSA enrichment
  28. 2026-07-10 09:49 UTCEG score recompute
  29. 2026-07-10 09:49 UTCGHSA enrichment
  30. 2026-07-10 05:47 UTCEG score recompute
  31. 2026-07-10 05:46 UTCGHSA enrichment
  32. 2026-07-10 01:44 UTCEG score recompute
  33. 2026-07-10 01:43 UTCGHSA enrichment
  34. 2026-07-09 21:41 UTCEG score recompute
  35. 2026-07-09 21:40 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-58123?
CVE-2026-58123 is a critical vulnerability published on July 9, 2026. Hermes WebUI before 0.51.788 contains an unauthenticated remote code execution vulnerability that allows remote attackers to execute arbitrary shell commands by accessing the embedded terminal API endpoints without credentials. Attackers can create a session, attach a PTY shell, and write arbitrary…
When was CVE-2026-58123 disclosed?
CVE-2026-58123 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-2026-58123 actively exploited?
CVE-2026-58123 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 56.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-58123?
CVE-2026-58123 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-58123?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58123, 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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