CVE-2025-31480: aiven-extras allows PostgreSQL Privilege Escalation through format function

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-04-04 · updated 2026-06-17
Weakness: CWE-426

Description

aiven-extras is a PostgreSQL extension. This is a privilege escalation vulnerability, allowing elevation to superuser inside PostgreSQL databases that use the aiven-extras package. The vulnerability leverages the format function not being schema-prefixed. Affected users should install 1.1.16 and ensure they run the latest version issuing ALTER EXTENSION aiven_extras UPDATE TO '1.1.16' after installing it. This needs to happen in each database aiven_extras has been installed in.

Affected products

aiven-extras: before 1.1.16

References

https://github.com/aiven/aiven-extras/commit/77b5f19a0c1d196bc741ff5c774f85fe7ca3063b
https://github.com/aiven/aiven-extras/security/advisories/GHSA-33xh-jqgf-6627

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