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
19%
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 22× in last 7d / 109× 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.

Showing the most recent 100 of 182 total refreshes for this CVE.

  1. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-25 13:45 UTCGHSA enrichment
  3. 2026-08-24 20:56 UTCEG score recompute
  4. 2026-08-24 20:56 UTCGHSA enrichment
  5. 2026-08-24 04:55 UTCGHSA enrichment
  6. 2026-08-23 17:44 UTCGHSA enrichment
  7. 2026-08-23 06:36 UTCEG score recompute
  8. 2026-08-23 06:36 UTCGHSA enrichment
  9. 2026-08-23 00:19 UTCEPSS rescore
  10. 2026-08-22 19:26 UTCGHSA enrichment
  11. 2026-08-22 06:29 UTCEG score recompute
  12. 2026-08-22 06:29 UTCGHSA enrichment
  13. 2026-08-21 23:49 UTCEPSS rescore
  14. 2026-08-21 15:47 UTCGHSA enrichment
  15. 2026-08-21 04:28 UTCEG score recompute
  16. 2026-08-21 04:28 UTCGHSA enrichment
  17. 2026-08-20 22:55 UTCEPSS rescore
  18. 2026-08-20 15:52 UTCGHSA enrichment
  19. 2026-08-20 04:13 UTCEG score recompute
  20. 2026-08-20 04:13 UTCGHSA enrichment
  21. 2026-08-19 17:04 UTCEPSS rescore
  22. 2026-08-19 10:18 UTCGHSA enrichment
  23. 2026-08-18 22:56 UTCEG score recompute
  24. 2026-08-18 22:56 UTCGHSA enrichment
  25. 2026-08-18 13:48 UTCEPSS rescore
Show 75 more
  1. 2026-08-18 11:48 UTCGHSA enrichment
  2. 2026-08-17 22:51 UTCEG score recompute
  3. 2026-08-17 22:51 UTCGHSA enrichment
  4. 2026-08-17 13:47 UTCEPSS rescore
  5. 2026-08-17 07:13 UTCGHSA enrichment
  6. 2026-08-16 20:05 UTCEG score recompute
  7. 2026-08-16 20:05 UTCGHSA enrichment
  8. 2026-08-16 14:56 UTCEPSS rescore
  9. 2026-08-16 08:56 UTCEG score recompute
  10. 2026-08-16 08:56 UTCGHSA enrichment
  11. 2026-08-16 02:14 UTCEPSS rescore
  12. 2026-08-15 21:48 UTCGHSA enrichment
  13. 2026-08-15 10:39 UTCEG score recompute
  14. 2026-08-15 10:39 UTCGHSA enrichment
  15. 2026-08-15 01:30 UTCEPSS rescore
  16. 2026-08-14 23:30 UTCGHSA enrichment
  17. 2026-08-14 12:21 UTCGHSA enrichment
  18. 2026-08-14 01:13 UTCEG score recompute
  19. 2026-08-14 01:13 UTCGHSA enrichment
  20. 2026-08-13 22:00 UTCEPSS rescore
  21. 2026-08-13 14:04 UTCGHSA enrichment
  22. 2026-08-13 02:48 UTCGHSA enrichment
  23. 2026-08-12 15:39 UTCEG score recompute
  24. 2026-08-12 15:39 UTCGHSA enrichment
  25. 2026-08-12 13:51 UTCEPSS rescore
  26. 2026-08-12 04:16 UTCGHSA enrichment
  27. 2026-08-11 17:07 UTCEG score recompute
  28. 2026-08-11 17:07 UTCGHSA enrichment
  29. 2026-08-11 05:58 UTCEG score recompute
  30. 2026-08-11 05:58 UTCGHSA enrichment
  31. 2026-08-11 00:00 UTCEPSS rescore
  32. 2026-08-10 18:50 UTCGHSA enrichment
  33. 2026-08-10 07:41 UTCGHSA enrichment
  34. 2026-08-09 20:32 UTCEG score recompute
  35. 2026-08-09 20:32 UTCGHSA enrichment
  36. 2026-08-09 13:46 UTCEPSS rescore
  37. 2026-08-09 09:24 UTCGHSA enrichment
  38. 2026-08-08 22:16 UTCGHSA enrichment
  39. 2026-08-08 11:07 UTCGHSA enrichment
  40. 2026-08-07 23:58 UTCEG score recompute
  41. 2026-08-07 23:58 UTCGHSA enrichment
  42. 2026-08-07 12:49 UTCGHSA enrichment
  43. 2026-08-07 01:40 UTCGHSA enrichment
  44. 2026-08-06 14:32 UTCEG score recompute
  45. 2026-08-06 14:32 UTCGHSA enrichment
  46. 2026-08-06 13:47 UTCEPSS rescore
  47. 2026-08-06 03:19 UTCEG score recompute
  48. 2026-08-06 03:19 UTCGHSA enrichment
  49. 2026-08-05 19:17 UTCEPSS rescore
  50. 2026-08-05 16:10 UTCGHSA enrichment
  51. 2026-08-05 01:29 UTCEG score recompute
  52. 2026-08-05 01:29 UTCGHSA enrichment
  53. 2026-08-04 15:10 UTCEPSS rescore
  54. 2026-08-04 14:17 UTCGHSA enrichment
  55. 2026-08-04 02:29 UTCGHSA enrichment
  56. 2026-08-03 15:20 UTCEG score recompute
  57. 2026-08-03 15:20 UTCGHSA enrichment
  58. 2026-08-03 10:36 UTCEPSS rescore
  59. 2026-08-03 04:12 UTCGHSA enrichment
  60. 2026-08-02 17:03 UTCGHSA enrichment
  61. 2026-08-02 05:54 UTCEG score recompute
  62. 2026-08-02 05:54 UTCGHSA enrichment
  63. 2026-08-02 02:27 UTCEPSS rescore
  64. 2026-08-01 18:46 UTCGHSA enrichment
  65. 2026-08-01 07:37 UTCEG score recompute
  66. 2026-08-01 07:37 UTCGHSA enrichment
  67. 2026-08-01 04:16 UTCEPSS rescore
  68. 2026-07-31 20:29 UTCGHSA enrichment
  69. 2026-07-31 09:10 UTCGHSA enrichment
  70. 2026-07-30 22:02 UTCEG score recompute
  71. 2026-07-30 22:02 UTCGHSA enrichment
  72. 2026-07-30 16:28 UTCEPSS rescore
  73. 2026-07-30 10:21 UTCEG score recompute
  74. 2026-07-30 10:21 UTCGHSA enrichment
  75. 2026-07-30 01:30 UTCEPSS rescore

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 81.2% 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

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