Heap-based Buffer Overflow Affecting postgresql package, versions [,14.21)[15.0-beta1,15.16)[16.0-beta1,16.12)[17.0-beta1,17.8)[18.0-beta1,18.2)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Heap-based Buffer Overflow vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-UNMANAGED-POSTGRESQL-15285657
- published16 Feb 2026
- disclosed12 Feb 2026
- creditTeam Xint Code
Introduced: 12 Feb 2026
CVE-2026-2005 (opens in a new tab)How to fix?
Upgrade postgresql to version 14.21, 15.16, 16.12, 17.8, 18.2 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow via the pgp_pub_decrypt_bytea(), which missing a safeguard for the session key length read from the message data, that can be given in input of pgp_pub_decrypt_bytea(). An attacker can execute arbitrary code as the operating system user running the database by supplying a crafted ciphertext to the affected component.