CVE-2026-115817: DoS

Description

Starman versions before 0.4019 for Perl allow a stalled request body to hold a worker indefinitely, as read_timeout covers only the headers. Content-Length and chunked request bodies are read with blocking reads and no deadline. A client that sends complete headers and then stalls or trickles the body keeps the worker waiting until it disconnects. A remote attacker can take every worker with a few such connections, five with the default worker count, so the server stops answering requests. Version 0.4019 applies read_timeout to each wait for body data and adds a body_timeout limit, 300 seconds by default, on the total time to read a body.

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Weakness Type (CWE)

CWE-770 CWE-770

References

Other References

https://github.com/miyagawa/Starman/commit/89dffd3bdc9baa1cbe1b48a43615586ba2588558.patch https://github.com/miyagawa/Starman/commit/a30533c03051502d6b67cd48b3a95a61e129691b.patch https://metacpan.org/release/MIYAGAWA/Starman-0.4019/changes

Frequently Asked Questions

What is CVE-2026-115817? +

Starman versions before 0.4019 for Perl allow a stalled request body to hold a worker indefinitely, as read_timeout covers only the headers. Content-Length and chunked request bodies are read with blocking reads and no deadline. A client that sends complete headers and then stalls or trickles the body keeps the worker waiting until it disconnects. A remote attacker can take every worker with a few such connections, five with the default worker count, so the server stops answering requests. Version 0.4019 applies read_timeout to each wait for body data and adds a body_timeout limit, 300 seconds by default, on the total time to read a body.

How do I check if I'm vulnerable to CVE-2026-115817? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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