CVE-2026-16241

LOWPre-NVD 3.83.8—
EchelonGraph scoreMEDIUM confidence

Score 3.8 from GitHub Security Advisory (severity: LOW) published 2026-08-13. A secondary CVSS source baseline 3.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
3.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 3.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Integer underflow in PostgreSQL ECPG allows a database server administrator to achieve temporary denial of service against the ECPG client via sending a bytea value lacking the mandatory prefix. The client overwrites a huge memory region with bytes outside attacker knowledge or control. This typically yields a simple SIGSEGV, but rare cases might achieve client-specific integrity impact via the write. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

CVSS v3
3.8
EG Score
3.8LOWmedium confidence
EG Risk
17
EG Risk 17/100CISA SSVC

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
Severity38% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
8th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 13, 2026

Last Modified

August 29, 2026

References (1)

Vendor Advisories for CVE-2026-16241(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 / EcosystemFix (by version range) / PatchReleasedSource
ubuntupostgresql-server-dev-14 (14.24-0ubuntu0.22.04.1) @ jammy2026-10-04ubuntu

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 rangeFix by version rangeDependents
postgresql16—
  • every version up to 16.15-r0: fixed in 16.15-r0
—
postgresql17—
  • every version up to 17.11-r0: fixed in 17.11-r0
—
Alpine:v3.22(2)
PackageVulnerable rangeFix by version rangeDependents
postgresql16—
  • every version up to 16.15-r0: fixed in 16.15-r0
—
postgresql17—
  • every version up to 17.11-r0: fixed in 17.11-r0
—
Alpine:v3.23(2)
PackageVulnerable rangeFix by version rangeDependents
postgresql17—
  • every version up to 17.11-r0: fixed in 17.11-r0
—
postgresql18—
  • every version up to 18.5-r0: fixed in 18.5-r0
—
Alpine:v3.24(2)
PackageVulnerable rangeFix by version rangeDependents
postgresql17—
  • every version up to 17.11-r0: fixed in 17.11-r0
—
postgresql18—
  • every version up to 18.5-r0: fixed in 18.5-r0
—
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 (20 versions)
  • every version up to 18.6-1: fixed in 18.6-1
—

Weakness Classification(1)

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

All Vendor Advisories

(1)

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 11× in last 7d / 46× 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.

  1. 2026-10-04 23:21 UTCEPSS rescore
  2. 2026-10-04 22:24 UTCEG score recompute
  3. 2026-10-04 22:24 UTCVendor advisory
  4. 2026-10-04 22:24 UTCGHSA enrichment
  5. 2026-10-03 14:25 UTCEPSS rescore
  6. 2026-10-01 19:49 UTCEPSS rescore
  7. 2026-10-01 12:36 UTCEG score recompute
  8. 2026-10-01 12:36 UTCVendor advisory
  9. 2026-10-01 12:36 UTCGHSA enrichment
  10. 2026-09-30 15:02 UTCEPSS rescore
  11. 2026-09-29 15:20 UTCEPSS rescore
  12. 2026-09-28 13:51 UTCEPSS rescore
  13. 2026-09-28 08:11 UTCEG score recompute
  14. 2026-09-28 08:11 UTCVendor advisory
  15. 2026-09-28 08:11 UTCGHSA enrichment
  16. 2026-09-27 13:47 UTCEPSS rescore
  17. 2026-09-26 15:58 UTCEPSS rescore
  18. 2026-09-25 03:36 UTCEG score recompute
  19. 2026-09-25 03:36 UTCVendor advisory
  20. 2026-09-25 03:36 UTCGHSA enrichment
  21. 2026-09-21 22:44 UTCEG score recompute
  22. 2026-09-21 22:44 UTCVendor advisory
  23. 2026-09-21 22:44 UTCGHSA enrichment
  24. 2026-09-18 19:27 UTCEPSS rescore
  25. 2026-09-18 18:19 UTCEG score recompute
Show 70 more
  1. 2026-09-18 18:19 UTCVendor advisory
  2. 2026-09-18 18:19 UTCGHSA enrichment
  3. 2026-09-16 14:07 UTCEPSS rescore
  4. 2026-09-16 05:14 UTCEPSS rescore
  5. 2026-09-15 13:54 UTCEG score recompute
  6. 2026-09-15 13:54 UTCVendor advisory
  7. 2026-09-15 13:54 UTCGHSA enrichment
  8. 2026-09-13 16:46 UTCEPSS rescore
  9. 2026-09-12 15:00 UTCEPSS rescore
  10. 2026-09-12 09:29 UTCEG score recompute
  11. 2026-09-12 09:29 UTCVendor advisory
  12. 2026-09-12 09:29 UTCGHSA enrichment
  13. 2026-09-11 14:52 UTCEPSS rescore
  14. 2026-09-11 09:36 UTCEPSS rescore
  15. 2026-09-10 09:34 UTCEPSS rescore
  16. 2026-09-09 05:03 UTCEG score recompute
  17. 2026-09-09 05:03 UTCVendor advisory
  18. 2026-09-09 05:03 UTCGHSA enrichment
  19. 2026-09-08 22:00 UTCEPSS rescore
  20. 2026-09-07 16:01 UTCEPSS rescore
  21. 2026-09-06 13:47 UTCEPSS rescore
  22. 2026-09-05 09:39 UTCEG score recompute
  23. 2026-09-05 09:39 UTCVendor advisory
  24. 2026-09-05 09:39 UTCGHSA enrichment
  25. 2026-09-04 05:06 UTCEPSS rescore
  26. 2026-09-02 14:11 UTCEPSS rescore
  27. 2026-09-02 05:14 UTCEG score recompute
  28. 2026-09-02 05:14 UTCGHSA enrichment
  29. 2026-09-01 13:53 UTCEPSS rescore
  30. 2026-08-30 19:17 UTCEPSS rescore
  31. 2026-08-30 01:22 UTCEPSS rescore
  32. 2026-08-29 23:26 UTCEG score recompute
  33. 2026-08-29 23:26 UTCVendor advisory
  34. 2026-08-29 23:26 UTCGHSA enrichment
  35. 2026-08-29 23:14 UTCEG score recompute
  36. 2026-08-29 23:14 UTCVendor advisory
  37. 2026-08-29 23:14 UTCGHSA enrichment
  38. 2026-08-29 08:15 UTCEG score recompute
  39. 2026-08-29 08:15 UTCVendor advisory
  40. 2026-08-29 08:15 UTCGHSA enrichment
  41. 2026-08-28 21:41 UTCEPSS rescore
  42. 2026-08-27 14:25 UTCEPSS rescore
  43. 2026-08-26 14:46 UTCEPSS rescore
  44. 2026-08-25 23:54 UTCEG score recompute
  45. 2026-08-25 23:54 UTCVendor advisory
  46. 2026-08-25 23:54 UTCGHSA enrichment
  47. 2026-08-23 00:19 UTCEPSS rescore
  48. 2026-08-22 19:29 UTCEG score recompute
  49. 2026-08-22 19:29 UTCVendor advisory
  50. 2026-08-22 19:29 UTCGHSA enrichment
  51. 2026-08-21 23:49 UTCEPSS rescore
  52. 2026-08-20 22:55 UTCEPSS rescore
  53. 2026-08-19 17:03 UTCEPSS rescore
  54. 2026-08-19 15:04 UTCGHSA enrichment
  55. 2026-08-18 15:33 UTCEG score recompute
  56. 2026-08-18 15:33 UTCGHSA enrichment
  57. 2026-08-18 13:48 UTCEPSS rescore
  58. 2026-08-17 13:47 UTCEPSS rescore
  59. 2026-08-16 20:55 UTCEG score recompute
  60. 2026-08-16 20:55 UTCGHSA enrichment
  61. 2026-08-16 14:56 UTCEPSS rescore
  62. 2026-08-16 02:14 UTCEPSS rescore
  63. 2026-08-15 01:30 UTCEPSS rescore
  64. 2026-08-13 16:29 UTCEG score recompute
  65. 2026-08-13 16:29 UTCGHSA enrichment
  66. 2026-08-13 16:01 UTCEG score recompute
  67. 2026-08-13 16:01 UTCGHSA enrichment
  68. 2026-08-13 13:35 UTCEG score recompute
  69. 2026-08-13 13:17 UTCEG score recompute
  70. 2026-08-13 13:16 UTCMITRE cvelistV5first tracked

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

Frequently asked(5)

What is CVE-2026-16241?
CVE-2026-16241 is a low vulnerability published on August 13, 2026. Integer underflow in PostgreSQL ECPG allows a database server administrator to achieve temporary denial of service against the ECPG client via sending a bytea value lacking the mandatory prefix. The client overwrites a huge memory region with bytes outside attacker knowledge or control. This…
When was CVE-2026-16241 disclosed?
CVE-2026-16241 was first published 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-2026-16241 actively exploited?
CVE-2026-16241 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (8th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-16241?
CVE-2026-16241 has a CVSS base score of 3.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-16241?
A fix for CVE-2026-16241 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-16241 are linked in the Vendor Advisories panel on this page.

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