CVE-2026-3257 UnQLite versions through 0.06 for Perl uses a potentially insecure version of the UnQLite library
The Perl UnQLite module embeds an outdated library vulnerable to heap-based overflow, potentially allowing code execution or crashes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3257?
CVE-2026-3257 is a critical memory corruption vulnerability in TOKUHIROM UnQLite, published on 5 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-1395
Which versions are affected by CVE-2026-3257?
It affects 1 product.
Products include Tokuhirom Unqlite.
How do I fix CVE-2026-3257?
No fix has been published for CVE-2026-3257 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-3257 being exploited?
There is no known exploitation of CVE-2026-3257 in the wild and no public exploit code.
Sources
Also known as GHSA-4rjc-gpxw-9fr5.