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Linux Distros Unpatched Vulnerability : CVE-2026-33532

medium Nessus Plugin ID 303989

Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

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

 - `yaml` is a YAML parser and serialiser for JavaScript. Parsing a YAML document with a version of `yaml` on the 1.x branch prior to 1.10.3 or on the 2.x branch prior to 2.8.3 may throw a RangeError due to a stack overflow. The node resolution/composition phase uses recursive function calls without a depth bound. An attacker who can supply YAML for parsing can trigger a `RangeError: Maximum call stack size exceeded` with a small payload (~210 KB). The `RangeError` is not a `YAMLParseError`, so applications that only catch YAML-specific errors will encounter an unexpected exception type. Depending on the host application's exception handling, this can fail requests or terminate the Node.js process. Flow sequences allow deep nesting with minimal bytes (2 bytes per level: one `[` and one `]`). On the default Node.js stack, approximately 1,0005,000 levels of nesting (210 KB input) exhaust the call stack. The exact threshold is environment-dependent (Node.js version, stack size, call stack depth at invocation). Note: the library's `Parser` (CST phase) uses a stack-based iterative approach and is not affected. Only the compose/resolve phase uses actual call-stack recursion. All three public parsing APIs are affected: `YAML.parse()`, `YAML.parseDocument()`, and `YAML.parseAllDocuments()`. Versions 1.10.3 and 2.8.3 contain a patch.
 (CVE-2026-33532)

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

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2026-33532

https://security-tracker.debian.org/tracker/CVE-2026-33532

Plugin Details

Severity: Medium

ID: 303989

File Name: unpatched_CVE_2026_33532.nasl

Version: 1.1

Type: local

Agent: unix

Family: Misc.

Published: 3/27/2026

Updated: 3/27/2026

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.9

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2026-33532

CVSS v3

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 4

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:redhat:enterprise_linux:gjs, p-cpe:/a:redhat:enterprise_linux:grafana-azure-monitor, p-cpe:/a:redhat:enterprise_linux:resource-agents-gcp, p-cpe:/a:centos:centos:grafana-opentsdb, p-cpe:/a:centos:centos:gjs, p-cpe:/a:redhat:enterprise_linux:pcs-snmp, p-cpe:/a:centos:centos:grafana-cloudwatch, p-cpe:/a:redhat:enterprise_linux:grafana-postgres, p-cpe:/a:centos:centos:resource-agents-gcp, p-cpe:/a:centos:centos:grafana-prometheus, cpe:/o:debian:debian_linux:12.0, p-cpe:/a:centos:centos:grafana-graphite, p-cpe:/a:debian:debian_linux:node-yaml, p-cpe:/a:redhat:enterprise_linux:grafana-elasticsearch, p-cpe:/a:redhat:enterprise_linux:grafana-opentsdb, p-cpe:/a:redhat:enterprise_linux:grafana-prometheus, p-cpe:/a:redhat:enterprise_linux:mozjs60, p-cpe:/a:redhat:enterprise_linux:pcs, p-cpe:/a:redhat:enterprise_linux:resource-agents-paf, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:grafana-influxdb, p-cpe:/a:centos:centos:grafana-loki, p-cpe:/a:centos:centos:resource-agents-aliyun, p-cpe:/a:redhat:enterprise_linux:grafana-pcp, cpe:/o:centos:centos:8, p-cpe:/a:centos:centos:grafana-selinux, p-cpe:/a:centos:centos:mozjs60, p-cpe:/a:centos:centos:grafana-pcp, p-cpe:/a:redhat:enterprise_linux:resource-agents, p-cpe:/a:centos:centos:grafana-mysql, p-cpe:/a:redhat:enterprise_linux:resource-agents-aliyun, p-cpe:/a:redhat:enterprise_linux:grafana-mssql, p-cpe:/a:redhat:enterprise_linux:grafana-selinux, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:10, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:centos:centos:resource-agents, p-cpe:/a:redhat:enterprise_linux:grafana-loki, p-cpe:/a:centos:centos:ruby4.0, p-cpe:/a:redhat:enterprise_linux:grafana, p-cpe:/a:centos:centos:mozjs60-devel, p-cpe:/a:centos:centos:gjs-devel, p-cpe:/a:redhat:enterprise_linux:grafana-graphite, p-cpe:/a:redhat:enterprise_linux:grafana-mysql, p-cpe:/a:redhat:enterprise_linux:ruby4.0, p-cpe:/a:redhat:enterprise_linux:mozjs60-devel, p-cpe:/a:centos:centos:grafana-stackdriver, p-cpe:/a:centos:centos:pcs, p-cpe:/a:centos:centos:pcs-snmp, p-cpe:/a:centos:centos:resource-agents-paf, p-cpe:/a:redhat:enterprise_linux:grafana-cloudwatch, p-cpe:/a:redhat:enterprise_linux:grafana-influxdb, cpe:/o:debian:debian_linux:14.0, p-cpe:/a:centos:centos:grafana-elasticsearch, p-cpe:/a:centos:centos:grafana-postgres, p-cpe:/a:centos:centos:grafana, p-cpe:/a:centos:centos:grafana-azure-monitor, p-cpe:/a:redhat:enterprise_linux:grafana-stackdriver, p-cpe:/a:centos:centos:grafana-mssql, p-cpe:/a:redhat:enterprise_linux:gjs-devel

Required KB Items: Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 3/25/2026

Reference Information

CVE: CVE-2026-33532