Vulnerability · Published Oct 25, 2026 · Assigned by CPANSec
CVE-2026-115817Starman versions before 0.4019 for Perl allow a stalled request body to hold a worker indefinitely, as read_timeout covers only the headers
High 7.5
In plain English
A high-severity resource allocation without limits in Starman. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | starman | no fix listed | DEBIAN-CVE-2026-115817 |
| Debian:13 | starman | no fix listed | DEBIAN-CVE-2026-115817 |
| Debian:14 | starman | 0.4019-1 | DEBIAN-CVE-2026-115817 |
| Ubuntu:22.04:LTS | starman | no fix listed | UBUNTU-CVE-2026-115817 |
| Ubuntu:24.04:LTS | starman | no fix listed | UBUNTU-CVE-2026-115817 |
| Ubuntu:26.04:LTS | starman | no fix listed | UBUNTU-CVE-2026-115817 |
| Ubuntu:26.10 | starman | no fix listed | UBUNTU-CVE-2026-115817 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Starman | 0 – before 0.4019 |
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N