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Advisory record · GHSA-x9vc-6hfv-hg8c

Npgsql vulnerable to SQL Injection via Protocol Message Size Overflow

CVSS 8.1 HighEPSS 0.017 · 77th percentile

Published by the GitHub Advisory Database at 9 May 2024, 15:12 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
NpgsqlNuGet>=8.0.0, <8.0.3 || <4.0.14 || >=4.1.0, <4.1.13 || >=5.0.0, <5.0.18 || >=6.0.0, <6.0.11 || >=7.0.0, <7.0.78.0.3, 4.0.14, 4.1.13, 5.0.18, 6.0.11, 7.0.7
Identifiers
GHSA-x9vc-6hfv-hg8c · CVE-2024-32655
Weakness (CWE)
CWE-89 · CWE-190
Tags
Published
9 May 2024
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Npgsql versions before 4.0.14, from 4.1.0 before 4.1.13, from 5.0.0 before 5.0.18, from 6.0.0 before 6.0.11, from 7.0.0 before 7.0.7, and from 8.0.0 before 8.0.3 are vulnerable. Integer overflow when writing bind message lengths with large parameter sums can let an attacker inject arbitrary Postgres protocol messages and run SQL statements on the application's behalf. Upgrade to 4.0.14, 4.1.13, 5.0.18, 6.0.11, 7.0.7, or 8.0.3 or later.

Written 9 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.1 High 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.017, the 77th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 9 May 2024, 14:20 UTC Published by the maintainers as a GitHub repository advisory
  2. 31 Oct 2026, 15:21 UTC First seen by agentprime
  3. 31 Oct 2026, 15:21 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.