[Pkg-javascript-devel] Bug#1143071: node-ajv: CVE-2026-13676

[Salvatore Bonaccorso]

Source: node-ajv
Version: 8.20.0~ds+~cs6.1.3-1
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for node-ajv.

CVE-2026-13676[0]:
| fast-uri versions 2.3.1 through 3.1.2 and 4.0.0 fail to canonicalize
| Unicode (IDN) hostnames for HTTP-family URLs. The IDN conversion
| path calls a helper that does not exist on the global URL
| constructor, silently leaving the host in its original Unicode form
| while normalize() and equal() still return values that differ from a
| WHATWG-compatible URL parser. Applications that use fast-uri to
| enforce host-based policy (denylists, loopback filtering, redirect
| validation, outbound proxy routing) before passing the same URL to
| Node's URL or fetch can be bypassed when the two implementations
| resolve the same input to different hosts. Patches: upgrade to fast-
| uri 3.1.3 for the 3.x line or 4.0.1 for the 4.x line. Workarounds:
| enforce host policy using the same URL parser used for the actual
| request, or reject non-ASCII hosts before policy checks.


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-2026-13676
    https://www.cve.org/CVERecord?id=CVE-2026-13676
[1] https://github.com/fastify/fast-uri/security/advisories/GHSA-4c8g-83qw-93j6

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore