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No exploitation reportedFix available

CVE-2026-116128

Starlet versions from 0.20 before 0.33 for Perl allow memory exhaustion via unbounded buffering when decoding chunked request bodies

No exploitation reported by the sources we read.

  • Published2026-10-30
  • WeaknessCWE-770

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Starlet versions from 0.20 before 0.33 for Perl allow memory exhaustion via unbounded buffering when decoding chunked request bodies. The decoder adds each read to one buffer of unconsumed input. Nothing limits the length of a chunk-size line, so a line without a CRLF grows the buffer for as long as the client keeps sending, and the read timeout restarts after every read. The data of a large chunk is also held in the buffer until the whole chunk has arrived. A remote attacker can exhaust a worker's memory with a single request.

Timeline

dates in UTC
  1. 2026-10-3012:46CVE publishedCNA

Versions per branch

Products declared by the CNA1 product

As CPANSec, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-10-30

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • starletUbuntu:26.10all versions · no fixed version listed
  • starletUbuntu:26.04:LTSall versions · no fixed version listed
  • starletUbuntu:24.04:LTSall versions · no fixed version listed
  • starletUbuntu:22.04:LTSall versions · no fixed version listed
  • starletUbuntu:20.04:LTSall versions · no fixed version listed
  • starletUbuntu:18.04:LTSall versions · no fixed version listed
  • starletUbuntu:16.04:LTSall versions · no fixed version listed
  • starletDebian:14all versions · fixed in 0.33-1

2 more package ranges on OSV.dev

Vendor advisories

  • CVE-2026-116128 Red Hat Product Security

    perl-starlet: Starlet: Denial of Service via unbounded buffering in chunked request decoding

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-10-30
Last Modified
2026-11-06
NVD status
Deferred
GitHub Advisory
GHSA-jrjq-4h5w-6gv7

Frequently asked questions

What is CVE-2026-116128?

Starlet versions from 0.20 before 0.33 for Perl allow memory exhaustion via unbounded buffering when decoding chunked request bodies. The decoder adds each read to one buffer of unconsumed input. Nothing limits the length of a chunk-size line, so a line without a CRLF grows the buffer for as long as the client keeps sending, and the read timeout restarts after every read. The data of a large chunk is also held in the buffer until the whole chunk has arrived. A remote attacker can exhaust a worker's memory with a single request.

Is CVE-2026-116128 actively exploited?

Active exploitation of CVE-2026-116128 has not been confirmed. Its EPSS score was 0.2% on 2026-11-05, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-116128?

CVE-2026-116128 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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