shell-quote prior to 1.8.5 finalizes parsed tokens in parse() using Array.prototype.concat as a reduce accumulator, which reallocates and copies the entire growing array on every iteration. As a result parse() runs in O(n^2) time relative to the number of input tokens. An attacker who can supply an attacker-controlled string to any code path that calls parse() (no shell metacharacters are required; plain space-separated words suffice) can block the single-threaded Node.js event loop for an extended period with a small input, resulting in a denial of service. There is no code execution or data disclosure; impact is to availability only. Fixed in 1.8.5.

The remote Debian 13 host has a package installed that is affected by multiple vulnerabilities as referenced in the dsa-6548 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6548-1                   security@debian.org     https://www.debian.org/security/                     Salvatore Bonaccorso     October 06, 2026                      https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : node-shell-quote     CVE ID         : CVE-2026-13311 CVE-2026-102422     Debian Bug     : 1140921 1149713

    Two vulnerabilities were discovered in node-shell-quote, a Node.js     module to quote and parse shell commands, which could result in denial     of service or shell command injection.

    For the stable distribution (trixie), these problems have been fixed in     version 1.7.4+~1.7.1-1+deb13u2.

    We recommend that you upgrade your node-shell-quote packages.

    For the detailed security status of node-shell-quote please refer to its     security tracker page at:
    https://security-tracker.debian.org/tracker/node-shell-quote

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

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

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

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

  - shell-quote prior to 1.8.5 finalizes parsed tokens in parse() using Array.prototype.concat as a reduce
    accumulator, which reallocates and copies the entire growing array on every iteration. As a result parse()
    runs in O(n^2) time relative to the number of input tokens. An attacker who can supply an attacker-
    controlled string to any code path that calls parse() (no shell metacharacters are required; plain space-
    separated words suffice) can block the single-threaded Node.js event loop for an extended period with a
    small input, resulting in a denial of service. There is no code execution or data disclosure; impact is to
    availability only. Fixed in 1.8.5. (CVE-2026-13311)

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21448-1 advisory.

    - CVE-2025-7783: form-data: unsafe `Math.random()` function is used to select a boundary value for     multipart       form-encoded data (bsc#1246822).
    - CVE-2026-12143: form-data: CRLF injection via unescaped multipart field names and filenames     (bsc#1272310).
    - CVE-2026-13149: brace-expansion: `expand()` function exhibits exponential-time complexity when     processing       non-expanding `{}` brace groups (bsc#1269927).
    - CVE-2026-13311: shell-quote: quadratic complexity in `parse()` function when processing specially     crafted strings       (bsc#1269359).
    - CVE-2026-13676: fast-uri: host-based policy bypass due to failure to canonicalize Unicode/IDN hostnames     for       HTTP-family URLs (bsc#1269595).
    - CVE-2026-27601: underscore: DoS via stack overflow due to missing depth limits in `_.flatten` and     `_.isEqual`       functions (bsc#1259169).
    - CVE-2026-40181: react-router: open redirect to an external domain due to path values starting with `//`     being       reinterpreted as protocol-relative URLs (bsc#1272311).
    - CVE-2026-49356: @babel/core: arbitrary file read via `sourceMappingURL` comment (bsc#1272317).
    - CVE-2026-53550: js-yaml: quadratic complexity in merge-key processing when processing a crafted YAML     document       (bsc#1268851).
    - CVE-2026-53632: launch-editor: NTLMv2 hash disclosure via UNC path handling on Windows (bsc#1272319).
    - CVE-2026-54466: websocket-driver: message corruption via abuse of protocol length headers (bsc#1272312).
    - CVE-2026-54490: websocket-driver: resource limit bypass via message compression (bsc#1272313).
    - CVE-2026-55602: http-proxy-middleware: Host-header-driven backend routing bypass via `router` host+path     substring       matching (bsc#1272318).

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

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

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21176-1 advisory.

    Changes in python-pytest-html:

    - Revendor updating shell-quote and js-yaml deps:
      - CVE-2026-13311: shell-quote: inefficient input parsing can lead to a         denial of service (bsc#1269361)
      - CVE-2026-53550: js-yaml: quadratic complexity when processing a         crafted YAML document can lead to CPU exhaustion (bsc#1268818)

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

Note that Nessus has not tested for these issues 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.

  - shell-quote prior to 1.8.5 finalizes parsed tokens in parse() using Array.prototype.concat as a reduce     accumulator, which reallocates and copies the entire growing array on every iteration. As a result parse()     runs in O(n^2) time relative to the number of input tokens. An attacker who can supply an attacker-     controlled string to any code path that calls parse() (no shell metacharacters are required; plain space-     separated words suffice) can block the single-threaded Node.js event loop for an extended period with a     small input, resulting in a denial of service. There is no code execution or data disclosure; impact is to     availability only. Fixed in 1.8.5. (CVE-2026-13311)

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

ID	Name	Product	Family	Type	Severity
363443	Debian dsa-6548 : node-shell-quote - security update	Nessus	Debian Local Security Checks	Local	critical
464022	Echo: shell-quote: security update to 1.9.0	Tenable Cloud Security	Echo Local Security Checks	Local	high
464022	Echo: shell-quote: security update to 1.9.0	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	high
330583	openSUSE 16 Security Update : agama-web-ui (openSUSE-SU-2026:21448-1)	Nessus	SuSE Local Security Checks	Local	critical
324890	openSUSE 16 Security Update : python-pytest-html (openSUSE-SU-2026:21176-1)	Nessus	SuSE Local Security Checks	Local	high
323323	Linux Distros Unpatched Vulnerability : CVE-2026-13311	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-13311

high

Tenable Plugins

critical

high

high

critical

high

high