linkify-it is a links recognition library with full Unicode support. Prior to 5.0.1, LinkifyIt.prototype.match, the package's primary public API, has O(N²) algorithmic complexity for inputs containing many fuzzy links or emails because the JavaScript-level scan loop re-slices input and re-runs unanchored regex searches on progressively shorter tails. Any service that synchronously renders untrusted Markdown with linkify:true on a request hot path can inherit a worker-process denial of service triggerable by a tens-of-KB request body. This issue is fixed in version 5.0.1.

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-7c23b06d74 advisory.

    Security release: `LinkifyIt.match()` was quadratic on untrusted input when linkify is enabled     ([GHSA-8m2q-wq3r-6hq8](https://github.com/tsutsu3/linkify-it-py/security/advisories/GHSA-8m2q-wq3r-6hq8)).

    - Fix quadratic complexity in `LinkifyIt.match()`, port of linkify-it 5.0.1 and 5.0.2 (upstream     [CVE-2026-48801](https://github.com/advisories/GHSA-22p9-wv53-3rq4),     [CVE-2026-59887](https://github.com/advisories/GHSA-v245-v573-v5vm))     ([#82](https://github.com/tsutsu3/linkify-it-py/pull/82))
    - Match validators at a position instead of slicing the tail, needed because Python 3.10 does not optimize     the `^` anchor ([#82](https://github.com/tsutsu3/linkify-it-py/pull/82))
    - Allow `;` in the email name, matching linkify-it. **Behavior change**: `a;b@example.com` is now     linkified ([#82](https://github.com/tsutsu3/linkify-it-py/pull/82))
    - Update port.yml (linkify-it v5.0.2) ([#82](https://github.com/tsutsu3/linkify-it-py/pull/82))


Tenable has extracted the preceding description block directly from the Fedora 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 Redhat Enterprise Linux 10 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:57590 advisory.

    Red Hat build of Podman Desktop is a graphical tool for managing containers using Podman. It allows users     to run, manage, and configure containers and container images using a desktop GUI.

    Security Fix(es):

    * github.com/go-jose/go-jose/v3: github.com/go-jose/go-jose/v4: Go JOSE: Denial of Service via crafted     JSON Web Encryption (JWE) object (CVE-2026-34986)

    * ip-address: ip-address: Cross-site scripting via improper HTML escaping of untrusted input     (CVE-2026-42338)

    * protobufjs: protobufjs: Denial of Service via crafted JSON descriptors (CVE-2026-45740)

    * ws: ws: Uninitialized memory disclosure via `websocket.close()` with `TypedArray` (CVE-2026-45736)

    * devalue: devalue: Excessive memory consumption via deserialization of sparse arrays (CVE-2026-42570)

    * tmp: path Traversal via unsanitized prefix/postfix enables directory escape (CVE-2026-44705)

    * form-data: form-data: Form field override via CRLF injection (CVE-2026-12143)

    * webpack-dev-server: webpack-dev-server: Information disclosure and denial of service via improper proxy     configuration (CVE-2026-9595)

    * ws: ws: Denial of Service via memory exhaustion from small WebSocket fragments (CVE-2026-48779)

    * extract-zip: github.com/maxogden/extract-zip: extract-zip: Arbitrary file write and information     disclosure via symlink validation bypass (CVE-2026-56876)

    * fast-uri: fast-uri: Security policy bypass due to improper Unicode hostname canonicalization     (CVE-2026-13676)

    * brace-expansion: Brace-expansion: Denial of Service due to exponential-time complexity (CVE-2026-13149)

    * tar: Node-tar: Denial of Service via malformed tar archive header (CVE-2026-59874)

    * tar: node-tar: Denial of Service via crafted gzip bomb (CVE-2026-59873)

    * js-yaml: js-yaml: Denial of Service via crafted YAML documents (CVE-2026-59869)

    * protobufjs: protobufjs: Denial of Service via crafted .proto schema (CVE-2026-59877)

    * grpc-js: @grpc/grpc-js: Server crash via malformed HTTP/2 stream initiation (CVE-2026-48068)

    * linkify-it: linkify-it: Denial of Service via algorithmic complexity vulnerability (CVE-2026-48801)

    * dompurify: DOMPurify: Cross-site scripting vulnerability allows code execution (CVE-2026-49978)

    * brace-expansion: Brace-expansion: Denial of Service via memory exhaustion in expand() function     (CVE-2026-14257)

    * postcss: PostCSS: Information disclosure and denial of service via crafted CSS input (CVE-2026-45623)

    * postcss: PostCSS: Information disclosure via crafted sourceMappingURL (CVE-2026-69153)

    * brace-expansion: DoS via unbounded intermediate arrays, bypassing the CVE-2026-14257 mitigation     (CVE-2026-69152)

    * ip-address: ip-address: Inconsistent IP address parsing leads to Server-Side Request Forgery (SSRF) and     trust-boundary bypass (CVE-2026-69192)

    Bug Fix(es) and Enhancement(s):

    * Release RH Podman Desktop 1.1.2 to RHEL 10.2 Extensions (JIRA:RHEL-238929)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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.

  - linkify-it is a links recognition library with full Unicode support. Prior to 5.0.1,     LinkifyIt.prototype.match, the package's primary public API, has O(N) algorithmic complexity for inputs     containing many fuzzy links or emails because the JavaScript-level scan loop re-slices input and re-runs     unanchored regex searches on progressively shorter tails. Any service that synchronously renders untrusted     Markdown with linkify:true on a request hot path can inherit a worker-process denial of service     triggerable by a tens-of-KB request body. This issue is fixed in version 5.0.1. (CVE-2026-48801)

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

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

  - linkify-it is a links recognition library with full Unicode support. Prior to 5.0.1,
    LinkifyIt.prototype.match, the package's primary public API, has O(N²) algorithmic complexity for inputs
    containing many fuzzy links or emails because the JavaScript-level scan loop re-slices input and re-runs
    unanchored regex searches on progressively shorter tails. Any service that synchronously renders untrusted
    Markdown with linkify:true on a request hot path can inherit a worker-process denial of service
    triggerable by a tens-of-KB request body. This issue is fixed in version 5.0.1. (CVE-2026-48801)

ID	Name	Product	Family	Type	Severity
342283	Fedora 44 : python-linkify-it-py (2026-7c23b06d74)	Nessus	Fedora Local Security Checks	Local	high
338414	RHEL 10 : rh-podman-desktop (RHSA-2026:57590)	Nessus	Red Hat Local Security Checks	Local	critical
327142	Linux Distros Unpatched Vulnerability : CVE-2026-48801	Nessus	Misc.	Local	high
444079	SCA: security update for linkify-it (GHSA-22p9-wv53-3rq4)	Tenable Cloud Security	SCA Checks	Local	high
444079	SCA: security update for linkify-it (GHSA-22p9-wv53-3rq4)	Tenable Self-Hosted Container Security	SCA Checks	Local	high

Detections

Analytics

CVE-2026-48801

high

Tenable Plugins

high

critical

high

high

high