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From: Salvatore Bonaccorso <carnil@debian.org>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: node-ajv: CVE-2026-18446
Message-ID: <178564886683.2745115.8249498960465261291.reportbug@eldamar.lan>
X-Mailer: reportbug 13.2.0+nmu1
Date: Sun, 02 Aug 2026 07:34:26 +0200
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Source: node-ajv
Version: 8.20.0~ds+~cs7.1.2-1
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for node-ajv.

CVE-2026-18446[0]:
| fast-uri before 4.1.2, 3.1.5, and 2.4.4 requires a literal double
| forward slash to recognize a URI authority, so a reference that uses
| a backslash based introducer in place of it (backslash backslash,
| forward slash backslash, or backslash forward slash) is parsed with
| no authority and folds into the path. Node's native WHATWG URL
| parser instead treats a backslash as interchangeable with a forward
| slash for special schemes, so the two parsers extract different
| hosts from the same input. Applications that use fast-uri to enforce
| host based policy such as allowlists, SSRF filtering, or redirect
| validation before passing the same URL into Node's URL or fetch
| consumers can be steered to an unintended host. Upgrade to fast-uri
| 4.1.2, 3.1.5, or 2.4.4.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-18446
    https://www.cve.org/CVERecord?id=CVE-2026-18446
[1] https://github.com/fastify/fast-uri/security/advisories/GHSA-7p8r-x3mc-p8w7

Regards,
Salvatore
]