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
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 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)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
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(18)

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 14× in last 7d / 52× 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 170 total refreshes for this CVE.

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

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 0% probability of exploitation in the next 30 days, which ranks it in the top 61.9% of all scored CVEs.
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.

Dependency Blast Radius

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