CVE-2026-6473

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-14. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.0%CVSS: 8.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Integer wraparound in multiple PostgreSQL server features allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds. This may execute arbitrary code as the operating system user running the database. In applications that pass gigabyte-scale user inputs to the relevant database functions, the application input provider may achieve a segmentation fault. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100

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
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
EPSS PROB
1.0%
EPSS %ILE
61st
KEV
Not listed

Published

May 14, 2026

Last Modified

August 25, 2026

Advisory Details (1)

Auto-updated May 14, 2026
Patch available.
generic

PostgreSQL: CVE-2026-6473: PostgreSQL server undersizes allocations, via integer wraparound

https://www.postgresql.org/support/security/CVE-2026-6473/

Vendor Advisories for CVE-2026-6473(20)

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

Patch Availability(30)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrhui5/rhua-tp-rhel9:17872412602026-08-24redhat
redhatpostgresql-0:9.2.24-9.el7_9.62026-08-03redhat
redhatansible-automation-platform/bootc-automation-portal-rhel9:17848046302026-07-23redhat
redhatrhui5/rhua-rhel9:17847950762026-07-23redhat
redhatlibpq-0:13.23-1.el8_4.12026-07-23redhat
redhatpostgresql:13-8080020260709122729.63b345852026-07-21redhat
redhatlibpq-0:13.23-1.el8_8.12026-07-06redhat
redhatpostgresql:12-8080020260626093604.63b345852026-07-01redhat
redhatpostgresql:13-8040020260630100922.522a0ee42026-07-01redhat
redhatpostgresql:12-8040020260624104459.522a0ee42026-07-01redhat
redhatpostgresql:15-9040020260616071806.rhel92026-06-30redhat
redhatpostgresql:15-9020020260625101129.rhel92026-06-30redhat
redhatpostgresql:13-8060020260625065744.ad008a3a2026-06-29redhat
redhatpostgresql:15-9060020260622062902.rhel92026-06-29redhat
redhatpostgresql-0:13.23-1.el9_2.22026-06-25redhat
redhatpostgresql-0:13.23-1.el9_4.22026-06-25redhat
redhatpostgresql-0:13.23-1.el9_6.22026-06-25redhat
redhatpostgresql:12-8060020260623094704.ad008a3a2026-06-25redhat
redhatpostgresql:12-8100020260605152253.489197e62026-06-24redhat
redhatpostgresql:13-8100020260605152256.489197e62026-06-23redhat
redhatpostgresql:16-8100020260530205218.489197e62026-06-23redhat
redhatlibpq-0:13.23-2.el8_102026-06-22redhat
redhatpostgresql18-0:18.4-1.el10_22026-06-22redhat
redhatpostgresql:15-9080020260605124405.rhel92026-06-22redhat
redhatpostgresql16-0:16.14-1.el10_22026-06-22redhat
redhatpostgresql16-0:16.14-1.el10_02026-06-22redhat
redhatpostgresql-0:13.23-3.el9_82026-06-22redhat
redhatpostgresql:15-8080020260615085052.63b345852026-06-17redhat
redhatpostgresql:16-9040020260612132455.rhel92026-06-17redhat
redhatpostgresql:16-9060020260612084605.rhel92026-06-17redhat

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.

Affected Packages

(14 across 9 ecosystems)
Alpine:v3.20(2)
PackageVulnerable rangeFix by version rangeDependents
postgresql15—
  • every version up to 15.18-r0: fixed in 15.18-r0
—
postgresql16—
  • every version up to 16.14-r0: fixed in 16.14-r0
—
Alpine:v3.21(2)
PackageVulnerable rangeFix by version rangeDependents
postgresql16—
  • every version up to 16.14-r0: fixed in 16.14-r0
—
postgresql17—
  • every version up to 17.10-r0: fixed in 17.10-r0
—
Alpine:v3.22(2)
PackageVulnerable rangeFix by version rangeDependents
postgresql16—
  • every version up to 16.14-r0: fixed in 16.14-r0
—
postgresql17—
  • every version up to 17.10-r0: fixed in 17.10-r0
—
Alpine:v3.23(2)
PackageVulnerable rangeFix by version rangeDependents
postgresql17—
  • every version up to 17.10-r0: fixed in 17.10-r0
—
postgresql18—
  • every version up to 18.4-r0: fixed in 18.4-r0
—
Alpine:v3.24(2)
PackageVulnerable rangeFix by version rangeDependents
postgresql17—
  • every version up to 17.10-r0: fixed in 17.10-r0
—
postgresql18—
  • every version up to 18.4-r0: fixed in 18.4-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
postgresql-1313.10-0+deb11u1 ... 13.9-0+deb11u1 (25 versions)
  • every version up to 13.23-0+deb11u4: fixed in 13.23-0+deb11u4
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
postgresql-1515.10-0+deb12u1 ... 15.9-0+deb12u1 (21 versions)
  • every version up to 15.19-0+deb12u1: fixed in 15.19-0+deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
postgresql-1717.10-0+deb13u1 ... 17.9-0+deb13u1 (7 versions)
  • every version up to 17.11-0+deb13u1: fixed in 17.11-0+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
postgresql-1818.0-1 ... 18~~devel.20250502-1 (19 versions)
  • every version up to 18.4-1: fixed in 18.4-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(15)

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 7× in last 7d / 23× 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 321 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-6473?
CVE-2026-6473 is a high vulnerability published on May 14, 2026. Integer wraparound in multiple PostgreSQL server features allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds. This may execute arbitrary code as the operating system user running the database. In applications that pass gigabyte-scale user…
When was CVE-2026-6473 disclosed?
CVE-2026-6473 was first published on May 14, 2026, with the most recent update on August 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6473 actively exploited?
CVE-2026-6473 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.0% probability of exploitation in the next 30 days (61st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-6473?
CVE-2026-6473 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-6473?
A fix for CVE-2026-6473 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-6473 are linked in the Vendor Advisories panel on this page.

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