CVE-2026-3257: UnQLite versions through 0.06 for Perl uses a potentially insecure version of the UnQLite library

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-05 · updated 2026-06-17
Weakness: CWE-1395

Description

UnQLite versions through 0.06 for Perl uses a potentially insecure version of the UnQLite library. UnQLite for Perl embeds the UnQLite library. Version 0.06 and earlier of the Perl module uses a version of the library from 2014 that may be vulnerable to a heap-based overflow.

Affected products

TOKUHIROM UnQLite: before 0.07 — fixed in 0.07

How to fix

Upgrade to a fixed version: TOKUHIROM UnQLite 0.07. Check the vendor advisory for mitigations.

References

https://metacpan.org/release/TOKUHIROM/UnQLite-0.07/source/Changes
https://unqlite.symisc.net/
https://www.cve.org/CVERecord?id=CVE-2025-3791

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