CVE-2026-3257

CVE-2026-3257 is a critical-severity vulnerability in Tokuhirom Unqlite with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

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.

Frequently asked questions

What is CVE-2026-3257?
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.
How severe is CVE-2026-3257?
CVE-2026-3257 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-3257 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3257?
CVE-2026-3257 affects Tokuhirom Unqlite. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3257?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-3257 have an EU (EUVD) identifier?
Yes. CVE-2026-3257 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9519.
When was CVE-2026-3257 published?
CVE-2026-3257 was published on 2026-03-05 and last updated on 2026-06-17.

References

Affected products (1)