CVE-2026-55110

HIGHNVD 6.17.5▲
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-02. NVD baseline CVSS 6.1; sources differ by 1.4.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: None knownExposed: 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
6.1
EG Score
7.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

July 2, 2026

Last Modified

July 9, 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 12× in last 7d / 73× 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. 2026-07-27 00:54 UTCEG score recompute
  2. 2026-07-27 00:54 UTCGHSA enrichment
  3. 2026-07-26 14:54 UTCEPSS rescore
  4. 2026-07-26 13:05 UTCEG score recompute
  5. 2026-07-26 13:05 UTCGHSA enrichment
  6. 2026-07-25 14:18 UTCEPSS rescore
  7. 2026-07-24 14:18 UTCEPSS rescore
  8. 2026-07-23 14:18 UTCEPSS rescore
  9. 2026-07-23 03:20 UTCEG score recompute
  10. 2026-07-22 14:08 UTCEPSS rescore
  11. 2026-07-21 15:25 UTCEPSS rescore
  12. 2026-07-20 17:08 UTCEPSS rescore
  13. 2026-07-19 14:31 UTCEPSS rescore
  14. 2026-07-19 14:31 UTCEPSS rescore
  15. 2026-07-19 02:29 UTCEPSS rescore
  16. 2026-07-18 10:04 UTCEPSS rescore
  17. 2026-07-17 02:48 UTCGHSA enrichment
  18. 2026-07-16 17:03 UTCEPSS rescore
  19. 2026-07-16 15:38 UTCGHSA enrichment
  20. 2026-07-16 04:23 UTCGHSA enrichment
  21. 2026-07-15 17:14 UTCGHSA enrichment
  22. 2026-07-15 16:57 UTCEPSS rescore
  23. 2026-07-15 16:57 UTCEPSS rescore
  24. 2026-07-15 06:03 UTCGHSA enrichment
  25. 2026-07-15 02:00 UTCEPSS rescore
Show 48 more
  1. 2026-07-15 02:00 UTCEPSS rescore
  2. 2026-07-14 18:34 UTCGHSA enrichment
  3. 2026-07-14 07:25 UTCGHSA enrichment
  4. 2026-07-13 22:31 UTCEPSS rescore
  5. 2026-07-13 20:17 UTCGHSA enrichment
  6. 2026-07-13 09:08 UTCGHSA enrichment
  7. 2026-07-13 06:13 UTCEPSS rescore
  8. 2026-07-13 06:13 UTCEPSS rescore
  9. 2026-07-12 21:58 UTCGHSA enrichment
  10. 2026-07-12 10:49 UTCGHSA enrichment
  11. 2026-07-12 05:46 UTCEPSS rescore
  12. 2026-07-11 23:41 UTCGHSA enrichment
  13. 2026-07-11 12:32 UTCGHSA enrichment
  14. 2026-07-11 08:27 UTCEPSS rescore
  15. 2026-07-11 08:27 UTCEPSS rescore
  16. 2026-07-11 01:23 UTCGHSA enrichment
  17. 2026-07-10 14:14 UTCGHSA enrichment
  18. 2026-07-10 03:04 UTCGHSA enrichment
  19. 2026-07-09 19:10 UTCEPSS rescore
  20. 2026-07-09 19:10 UTCEPSS rescore
  21. 2026-07-09 19:01 UTCNVD updateCVSS v3 → 6.1 · severity → MEDIUM
  22. 2026-07-09 15:55 UTCGHSA enrichment
  23. 2026-07-09 04:46 UTCGHSA enrichment
  24. 2026-07-08 17:35 UTCGHSA enrichment
  25. 2026-07-08 15:16 UTCEPSS rescore
  26. 2026-07-08 15:16 UTCEPSS rescore
  27. 2026-07-08 06:26 UTCGHSA enrichment
  28. 2026-07-07 19:18 UTCGHSA enrichment
  29. 2026-07-07 13:46 UTCEPSS rescore
  30. 2026-07-07 13:46 UTCEPSS rescore
  31. 2026-07-07 07:58 UTCGHSA enrichment
  32. 2026-07-06 20:49 UTCGHSA enrichment
  33. 2026-07-06 16:27 UTCEPSS rescore
  34. 2026-07-06 16:27 UTCEPSS rescore
  35. 2026-07-06 09:40 UTCGHSA enrichment
  36. 2026-07-05 22:29 UTCGHSA enrichment
  37. 2026-07-05 11:21 UTCGHSA enrichment
  38. 2026-07-05 02:31 UTCEPSS rescore
  39. 2026-07-05 02:30 UTCEPSS rescore
  40. 2026-07-05 00:12 UTCGHSA enrichment
  41. 2026-07-04 12:58 UTCGHSA enrichment
  42. 2026-07-04 06:31 UTCEPSS rescore
  43. 2026-07-04 06:31 UTCEPSS rescore
  44. 2026-07-04 01:50 UTCGHSA enrichment
  45. 2026-07-03 14:40 UTCGHSA enrichment
  46. 2026-07-03 03:31 UTCGHSA enrichment
  47. 2026-07-02 16:23 UTCEG score recompute
  48. 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, with the most recent update on July 9, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 96.1% of all scored CVEs.
What is the CVSS score of CVE-2026-55110?
CVE-2026-55110 has a CVSS v3 base score of 6.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.5.
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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