CVE-2026-15742

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-13. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — Patch released this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

A fix is available — apply it.

Integer wraparound in PostgreSQL fuzzystrmatch allows a user to direct writes to a huge range of addresses, executing arbitrary code as the operating system user running the database, via extreme inputs to SQL function levenshtein() or levenshtein_less_equal(). Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
37%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 29, 2026

Advisory Details (1)

Auto-updated Aug 13, 2026
No patch confirmed yet.
generic

PostgreSQL: CVE-2026-15742: PostgreSQL fuzzystrmatch writes effectively-arbitrary addresses, via integer wraparound

https://www.postgresql.org/support/security/CVE-2026-15742/

Vendor Advisories for CVE-2026-15742(1)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntupostgresql-server-dev-18 (18.6-0ubuntu0.26.04.1) @ resolute2026-09-20ubuntu
redhatpostgresql:18-9080020260914093252.rhel92026-09-16redhat
redhatpostgresql:16-9080020260907191505.rhel92026-09-15redhat
redhatpostgresql18-0:18.6-1.el10_22026-09-14redhat

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

(11 across 7 ecosystems)
Alpine:v3.21(2)
PackageVulnerable rangeFixed inDependents
postgresql16—16.15-r0—
postgresql17—17.11-r0—
Alpine:v3.22(2)
PackageVulnerable rangeFixed inDependents
postgresql16—16.15-r0—
postgresql17—17.11-r0—
Alpine:v3.23(2)
PackageVulnerable rangeFixed inDependents
postgresql17—17.11-r0—
postgresql18—18.5-r0—
Alpine:v3.24(2)
PackageVulnerable rangeFixed inDependents
postgresql17—17.11-r0—
postgresql18—18.5-r0—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
postgresql-1515.10-0+deb12u1 ... 15.9-0+deb12u1 (21 versions)15.19-0+deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
postgresql-1717.10-0+deb13u1 ... 17.9-0+deb13u1 (7 versions)17.11-0+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
postgresql-1818.0-1 ... 18~~devel.20250502-1 (20 versions)18.6-1—

Weakness Classification(1)

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

All Vendor Advisories

(5)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 38× in last 7d / 172× 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 219 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-15742?
CVE-2026-15742 is a high vulnerability published on August 13, 2026. Integer wraparound in PostgreSQL fuzzystrmatch allows a user to direct writes to a huge range of addresses, executing arbitrary code as the operating system user running the database, via extreme inputs to SQL function levenshtein() or levenshteinlessequal(). Versions before PostgreSQL 18.6, 17.11,…
When was CVE-2026-15742 disclosed?
CVE-2026-15742 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on August 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15742 actively exploited?
CVE-2026-15742 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 62.7% of all scored CVEs.
What is the CVSS score of CVE-2026-15742?
CVE-2026-15742 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-15742?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15742, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-15742

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