CVE-2026-55110

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-02. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

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

A malicious actor who lures an authenticated user to a malicious page could exploit a Cross-Origin Resource Sharing (CORS) misconfiguration found in UniFi OS to trigger actions in UniFi OS using that user's session.

CVSS v3
7.5
EG Score
7.5(high)
EPSS
7.9%
KEV
Not listed

Published

July 2, 2026

Last Modified

July 2, 2026

Advisory Details (1)

Auto-updated Jul 3, 2026
No patch confirmed yet.
generic
https://community.ui.com/releases/Security-Advisory-Bulletin-066-066/984eceb3-49c8-4227-942d-671c289b3afc

Vendor Advisories for CVE-2026-55110(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. 2026-07-07 07:58 UTCEG score recompute
  2. 2026-07-07 07:58 UTCGHSA enrichment
  3. 2026-07-06 20:49 UTCEG score recompute
  4. 2026-07-06 20:49 UTCGHSA enrichment
  5. 2026-07-06 16:27 UTCEPSS rescore
  6. 2026-07-06 16:27 UTCEPSS rescore
  7. 2026-07-06 09:40 UTCEG score recompute
  8. 2026-07-06 09:40 UTCGHSA enrichment
  9. 2026-07-05 22:29 UTCEG score recompute
  10. 2026-07-05 22:29 UTCGHSA enrichment
  11. 2026-07-05 11:21 UTCEG score recompute
  12. 2026-07-05 11:21 UTCGHSA enrichment
  13. 2026-07-05 02:31 UTCEPSS rescore
  14. 2026-07-05 02:30 UTCEPSS rescore
  15. 2026-07-05 00:12 UTCEG score recompute
  16. 2026-07-05 00:12 UTCGHSA enrichment
  17. 2026-07-04 12:58 UTCEG score recompute
  18. 2026-07-04 12:58 UTCGHSA enrichment
  19. 2026-07-04 06:31 UTCEPSS rescore
  20. 2026-07-04 06:31 UTCEPSS rescore
  21. 2026-07-04 01:50 UTCEG score recompute
  22. 2026-07-04 01:50 UTCGHSA enrichment
  23. 2026-07-03 14:40 UTCEG score recompute
  24. 2026-07-03 14:40 UTCGHSA enrichment
  25. 2026-07-03 03:32 UTCEG score recompute
Show 3 more
  1. 2026-07-03 03:31 UTCGHSA enrichment
  2. 2026-07-02 16:23 UTCEG score recompute
  3. 2026-07-02 16:23 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-55110?
CVE-2026-55110 is a high vulnerability published on July 2, 2026. A malicious actor who lures an authenticated user to a malicious page could exploit a Cross-Origin Resource Sharing (CORS) misconfiguration found in UniFi OS to trigger actions in UniFi OS using that user's session.
When was CVE-2026-55110 disclosed?
CVE-2026-55110 was first published in the National Vulnerability Database on July 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55110 actively exploited?
CVE-2026-55110 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-55110?
CVE-2026-55110 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-55110?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55110, 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

Explore the affected products and dependency analysis for CVE-2026-55110

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