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VulnerabilityPublished Updated

CVE-2026-65059: Libfurl perl · Furl versions through 3.15 for Perl allow memory exhaustion via unbounded decompression

Affects libfurl-perlSource GCVE Database

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Authoritative record:CVE-2026-65059· High

Not known to be exploited.

Data as of 5 Nov 2026, 12:34 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 2 Nov 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 26.10libfurl-perlpkg:deb/ubuntu/libfurl-perl?arch=source&distro=stonkingOther threatsAffected
  • =3.15-1
Fixed in–
Ubuntu 26.04 LTSlibfurl-perlpkg:deb/ubuntu/libfurl-perl?arch=source&distro=resoluteOther threatsAffected
  • =3.14-2
  • =3.15-1
Fixed in–
Ubuntu 24.04 LTSlibfurl-perlpkg:deb/ubuntu/libfurl-perl?arch=source&distro=nobleOther threatsAffected
  • =3.14-2
Fixed in–
Ubuntu 22.04 LTSlibfurl-perlpkg:deb/ubuntu/libfurl-perl?arch=source&distro=jammyOther threatsAffected
  • =3.13-2
  • =3.14-1
  • =3.14-2
Fixed in–
Ubuntu 20.04 LTSlibfurl-perlpkg:deb/ubuntu/libfurl-perl?arch=source&distro=focalOther threatsAffected
  • =3.13-2
Fixed in–
Ubuntu 18.04 LTSlibfurl-perlpkg:deb/ubuntu/libfurl-perl?arch=source&distro=bionicOther threatsAffected
  • =3.08-2
  • =3.13-1
Fixed in–

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

Description

Furl versions through 3.15 for Perl allow memory exhaustion via unbounded decompression of HTTP responses. Furl inflates a response body sent with a gzip, x-gzip or deflate Content-Encoding and appends the output to the response string with no size limit. It does this whether or not the request asked for compression, and no option caps the decompressed size. Responses read with write_file or write_code are streamed rather than held in memory. A malicious server, or an attacker on a plain HTTP connection, can send a small compressed response that expands to exhaust the client's memory and end the process.

References

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