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VulnerabilityPublished Updated

CVE-2026-115865: Starlet versions before 0.33 for Perl allow a request declaring a large Content-Length to kill a

Affects starletSource GCVE Database

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Authoritative record:CVE-2026-115865· High

Not known to be exploited.

Data as of 5 Nov 2026, 12:35 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10starletpkg:deb/ubuntu/starlet?arch=source&distro=stonkingOther threatsAffected
  • =0.31-2build1
  • =0.31-3
  • =0.32-1
Fixed in–
Ubuntu 26.04 LTSstarletpkg:deb/ubuntu/starlet?arch=source&distro=resoluteOther threatsAffected
  • =0.31-2
  • =0.31-2build1
Fixed in–
Ubuntu 24.04 LTSstarletpkg:deb/ubuntu/starlet?arch=source&distro=nobleOther threatsAffected
  • =0.31-2
Fixed in–
Ubuntu 22.04 LTSstarletpkg:deb/ubuntu/starlet?arch=source&distro=jammyOther threatsAffected
  • =0.31-1.1
Fixed in–
Ubuntu 20.04 LTSstarletpkg:deb/ubuntu/starlet?arch=source&distro=focalOther threatsAffected
  • =0.31-1
Fixed in–
Ubuntu 18.04 LTSstarletpkg:deb/ubuntu/starlet?arch=source&distro=bionicOther threatsAffected
  • =0.31-1
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

Starlet versions before 0.33 for Perl allow a request declaring a large Content-Length to kill a worker by exhausting memory. The request body is read in a loop that asks sysread for all of the remaining declared length at once. Perl grows the read buffer to that size before any data arrives, so a length larger than available memory makes the worker exit with an uncatchable out of memory error before the application is called. A remote attacker can force a worker restart with each request of a few bytes.

References

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