CVE-2026-115817: high-severity vulnerability in Starman
Starman versions before 0.4019 for Perl allow a stalled request body to hold a worker indefinitely, as read_timeout covers only the headers
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.3%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
StarmanRelated CVEs — Starman
In the same product, most dangerous first.
CVE-2026-115824HIGHStarman versions before 0.4019 for Perl allow memory exhaustion via unbounded buffering of chunked request bodiesEPSS 0.3%CVE-2026-115822HIGHStarman versions before 0.4019 for Perl allow CPU exhaustion via quadratic regex backtracking when parsing chunked request bodiesEPSS 0.3%CVE-2026-115823CRITICALStarman versions before 0.4019 for Perl send response bodies for HEAD requests, desynchronizing responses on keep-alive connectionsEPSS 0.2%