CVE-2026-16241

LOWPre-NVD 3.83.8—
EchelonGraph scoreHIGH 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 — 3 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%CVSS: 3.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

CVSS v3
3.8
EG Score
3.8(high)
EG Risk
17(Track)
EG Risk 17/100SSVC: 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
Severity38% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
27%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 19, 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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 18× 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. 2026-08-19 17:03 UTCEPSS rescore
  2. 2026-08-19 15:04 UTCGHSA enrichment
  3. 2026-08-18 15:33 UTCEG score recompute
  4. 2026-08-18 15:33 UTCGHSA enrichment
  5. 2026-08-18 13:48 UTCEPSS rescore
  6. 2026-08-17 13:47 UTCEPSS rescore
  7. 2026-08-16 20:55 UTCEG score recompute
  8. 2026-08-16 20:55 UTCGHSA enrichment
  9. 2026-08-16 14:56 UTCEPSS rescore
  10. 2026-08-16 02:14 UTCEPSS rescore
  11. 2026-08-15 01:30 UTCEPSS rescore
  12. 2026-08-13 16:29 UTCEG score recompute
  13. 2026-08-13 16:29 UTCGHSA enrichment
  14. 2026-08-13 16:01 UTCEG score recompute
  15. 2026-08-13 16:01 UTCGHSA enrichment
  16. 2026-08-13 13:35 UTCEG score recompute
  17. 2026-08-13 13:17 UTCEG score recompute
  18. 2026-08-13 13:16 UTCMITRE cvelistV5first tracked

Related CVEs(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 in the National Vulnerability Database on August 13, 2026, with the most recent update on August 19, 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% probability of exploitation in the next 30 days, which ranks it in the top 73.4% of all scored CVEs.
What is the CVSS score of CVE-2026-16241?
CVE-2026-16241 has a CVSS v3 base score of 3.8 (NVD).
How do I remediate CVE-2026-16241?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16241, 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

Explore the affected products and dependency analysis for CVE-2026-16241

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