CVE-2026-6479

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-14. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
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

A fix is available — apply it.

Uncontrolled recursion in PostgreSQL SSL and GSS negotiation allows an attacker able to connect to a PostgreSQL AF_UNIX socket to achieve sustained denial of service. If SSL and GSS are both disabled, an attacker can do the same via access to a PostgreSQL TCP socket. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
37.5%
KEV
Not listed

Published

May 14, 2026

Last Modified

May 18, 2026

Advisory Details (1)

Auto-updated May 14, 2026
No patch confirmed yet.
generic

PostgreSQL: CVE-2026-6479: PostgreSQL SSL/GSS init causes denial of service, via uncontrolled recursion

https://www.postgresql.org/support/security/CVE-2026-6479/

Vendor Advisories for CVE-2026-6479(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntupostgresql-server-dev-18 (18.4-0ubuntu0.26.04.1) @ resolute2026-06-29ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 13× in last 7d / 87× 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. 2026-07-12 05:46 UTCEPSS rescore
  2. 2026-07-11 08:27 UTCEPSS rescore
  3. 2026-07-11 08:27 UTCEPSS rescore
  4. 2026-07-09 19:10 UTCEPSS rescore
  5. 2026-07-09 19:10 UTCEPSS rescore
  6. 2026-07-08 15:16 UTCEPSS rescore
  7. 2026-07-08 15:16 UTCEPSS rescore
  8. 2026-07-07 13:46 UTCEPSS rescore
  9. 2026-07-07 13:46 UTCEPSS rescore
  10. 2026-07-06 16:27 UTCEPSS rescore
  11. 2026-07-06 16:27 UTCEPSS rescore
  12. 2026-07-06 02:23 UTCEPSS rescore
  13. 2026-07-06 02:23 UTCEPSS rescore
  14. 2026-07-05 02:31 UTCEPSS rescore
  15. 2026-07-05 02:30 UTCEPSS rescore
  16. 2026-07-04 06:31 UTCEPSS rescore
  17. 2026-07-04 06:31 UTCEPSS rescore
  18. 2026-07-01 15:07 UTCEPSS rescore
  19. 2026-06-30 23:22 UTCEPSS rescore
  20. 2026-06-29 21:56 UTCEG score recompute
  21. 2026-06-29 21:56 UTCVendor advisory
  22. 2026-06-29 21:56 UTCGHSA enrichment
  23. 2026-06-29 14:06 UTCEPSS rescore
  24. 2026-06-28 14:07 UTCEPSS rescore
  25. 2026-06-28 11:25 UTCEG score recompute
Show 75 more
  1. 2026-06-28 11:25 UTCVendor advisory
  2. 2026-06-28 11:25 UTCGHSA enrichment
  3. 2026-06-28 04:56 UTCEPSS rescore
  4. 2026-06-27 22:51 UTCEG score recompute
  5. 2026-06-27 22:51 UTCVendor advisory
  6. 2026-06-27 22:51 UTCGHSA enrichment
  7. 2026-06-27 08:46 UTCEG score recompute
  8. 2026-06-27 08:46 UTCVendor advisory
  9. 2026-06-27 08:46 UTCGHSA enrichment
  10. 2026-06-27 03:08 UTCEPSS rescore
  11. 2026-06-26 20:24 UTCEG score recompute
  12. 2026-06-26 20:24 UTCVendor advisory
  13. 2026-06-26 20:24 UTCGHSA enrichment
  14. 2026-06-25 19:18 UTCEG score recompute
  15. 2026-06-25 19:18 UTCVendor advisory
  16. 2026-06-25 19:18 UTCGHSA enrichment
  17. 2026-06-25 13:50 UTCEPSS rescore
  18. 2026-06-24 14:05 UTCEPSS rescore
  19. 2026-06-23 21:33 UTCEPSS rescore
  20. 2026-06-23 21:33 UTCEPSS rescore
  21. 2026-06-22 14:25 UTCEPSS rescore
  22. 2026-06-22 14:25 UTCEPSS rescore
  23. 2026-06-21 14:56 UTCEPSS rescore
  24. 2026-06-21 14:56 UTCEPSS rescore
  25. 2026-06-21 01:59 UTCEPSS rescore
  26. 2026-06-21 01:59 UTCEPSS rescore
  27. 2026-06-19 19:26 UTCEPSS rescore
  28. 2026-06-19 19:26 UTCEPSS rescore
  29. 2026-06-18 17:52 UTCEPSS rescore
  30. 2026-06-18 17:52 UTCEPSS rescore
  31. 2026-06-17 17:53 UTCEPSS rescore
  32. 2026-06-17 13:57 UTCEG score recompute
  33. 2026-06-17 13:57 UTCVendor advisory
  34. 2026-06-17 13:57 UTCGHSA enrichment
  35. 2026-06-16 22:21 UTCEG score recompute
  36. 2026-06-16 22:21 UTCVendor advisory
  37. 2026-06-16 22:21 UTCGHSA enrichment
  38. 2026-06-16 17:53 UTCEPSS rescore
  39. 2026-06-16 00:05 UTCEG score recompute
  40. 2026-06-16 00:05 UTCVendor advisory
  41. 2026-06-16 00:05 UTCGHSA enrichment
  42. 2026-06-15 17:49 UTCEPSS rescore
  43. 2026-06-15 17:49 UTCEPSS rescore
  44. 2026-06-15 00:14 UTCEG score recompute
  45. 2026-06-15 00:14 UTCVendor advisory
  46. 2026-06-15 00:14 UTCGHSA enrichment
  47. 2026-06-14 23:18 UTCEPSS rescore
  48. 2026-06-14 11:54 UTCEG score recompute
  49. 2026-06-14 11:54 UTCVendor advisory
  50. 2026-06-14 11:54 UTCGHSA enrichment
  51. 2026-06-13 23:33 UTCEG score recompute
  52. 2026-06-13 23:33 UTCVendor advisory
  53. 2026-06-13 23:33 UTCGHSA enrichment
  54. 2026-06-13 23:00 UTCEPSS rescore
  55. 2026-06-13 01:34 UTCEG score recompute
  56. 2026-06-13 01:34 UTCVendor advisory
  57. 2026-06-13 01:34 UTCGHSA enrichment
  58. 2026-06-12 23:12 UTCEPSS rescore
  59. 2026-06-12 23:12 UTCEPSS rescore
  60. 2026-06-12 13:13 UTCEG score recompute
  61. 2026-06-12 13:13 UTCVendor advisory
  62. 2026-06-12 13:13 UTCGHSA enrichment
  63. 2026-06-12 00:50 UTCEG score recompute
  64. 2026-06-12 00:50 UTCVendor advisory
  65. 2026-06-12 00:50 UTCGHSA enrichment
  66. 2026-06-11 14:00 UTCEPSS rescore
  67. 2026-06-11 12:30 UTCEG score recompute
  68. 2026-06-11 12:30 UTCVendor advisory
  69. 2026-06-11 12:30 UTCGHSA enrichment
  70. 2026-06-11 00:10 UTCEG score recompute
  71. 2026-06-11 00:10 UTCVendor advisory
  72. 2026-06-11 00:10 UTCGHSA enrichment
  73. 2026-06-10 22:19 UTCEPSS rescore
  74. 2026-06-10 13:22 UTCEPSS rescore
  75. 2026-06-10 11:50 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-6479?
CVE-2026-6479 is a high vulnerability published on May 14, 2026. Uncontrolled recursion in PostgreSQL SSL and GSS negotiation allows an attacker able to connect to a PostgreSQL AF_UNIX socket to achieve sustained denial of service. If SSL and GSS are both disabled, an attacker can do the same via access to a PostgreSQL TCP socket. Versions before PostgreSQL…
When was CVE-2026-6479 disclosed?
CVE-2026-6479 was first published in the National Vulnerability Database on May 14, 2026, with the most recent update on May 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6479 actively exploited?
CVE-2026-6479 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 37.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-6479?
CVE-2026-6479 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-6479?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6479, 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.

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