Debian Linux - libyaml-perl - None

Ubuntu Linux - backtracking leading to exponential load time

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  CVE-2026-63676


The version of perl-YAML installed on the remote host is prior to 0.84-5. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3918 advisory.

    Backtracking leads to exponential load time in libyaml library. (CVE-2026-63676)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-2151 advisory.

    Backtracking leads to exponential load time in libyaml library. (CVE-2026-63676)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Debian Linux - libyaml-perl - None  Ubuntu Linux - backtracking leading to exponential load time     (CVE-2026-63676)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
458490	Echo: libyaml-perl: security update to 1.31-1+e1	Tenable Cloud Security	Echo Local Security Checks	Local	high
458490	Echo: libyaml-perl: security update to 1.31-1+e1	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	high
345789	Amazon Linux 2 : perl-YAML (ALAS-2026-3918)	Nessus	Amazon Linux Local Security Checks	Local	high
345781	Amazon Linux 2023 : perl-YAML, perl-YAML-tests (ALAS2023-2026-2151)	Nessus	Amazon Linux Local Security Checks	Local	high
339666	Linux Distros Unpatched Vulnerability : CVE-2026-63676	Nessus	Misc.	Local	high
445228	Alpine: multiple perl-yaml packages: security update to 1.320.0-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	high
445228	Alpine: multiple perl-yaml packages: security update to 1.320.0-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	high

Detections

Analytics

CVE-2026-63676

high

Tenable Plugins

high

high

high

high

high

high

high