CVE-2026-2812

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-05-20. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

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

ArcGIS Server contains an improper authentication vulnerability in an undocumented administrative endpoint. An unauthenticated attacker could exploit this issue by sending a crafted request to the endpoint. Successful exploitation may result in disruption of the web-based browsing interface. This issue affects ArcGIS Server 12.0 and earlier.

CVSS v3
5.3
EG Score
5.3(medium)
EPSS
28.1%
KEV
Not listed

Published

May 20, 2026

Last Modified

May 21, 2026

References (1)

Vendor Advisories for CVE-2026-2812(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 9× in last 7d / 54× 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 133 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-2812?
CVE-2026-2812 is a medium vulnerability published on May 20, 2026. ArcGIS Server contains an improper authentication vulnerability in an undocumented administrative endpoint. An unauthenticated attacker could exploit this issue by sending a crafted request to the endpoint. Successful exploitation may result in disruption of the web-based browsing interface. This…
When was CVE-2026-2812 disclosed?
CVE-2026-2812 was first published in the National Vulnerability Database on May 20, 2026, with the most recent update on May 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-2812 actively exploited?
CVE-2026-2812 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 28.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-2812?
CVE-2026-2812 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-2812?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-2812, 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-2026-2812

Explore →

Is Your Infrastructure Affected by CVE-2026-2812?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs