Hi,

The following vulnerability was published for node-js-yaml.

CVE-2026-59869[0]:
| js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 before
| 3.15.0 and from 4.0.0 before 4.3.0, js-yaml can spend quadratic CPU
| time parsing a document whose size grows only linearly when a chain
| of mappings uses merge keys where each mapping merges the previous
| one. This issue is fixed in versions 3.15.0 and 4.3.0.


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-2026-59869
https://www.cve.org/CVERecord?id=CVE-2026-59869
[1] https://github.com/nodeca/js-yaml/security/advisories/GHSA-52cp-r559-cp3m
[2] https://github.com/nodeca/js-yaml/commit/59423c6f8cdc78742ac00e25a4dd39ef16b702e4

Regards,
Salvatore

Hello,

Bug #1141820 in node-js-yaml reported by you has been fixed in the
Git repository and is awaiting an upload. You can see the commit
message below and you can check the diff of the fix at:

https://salsa.debian.org/js-team/node-js-yaml/-/commit/0e7efbb4e9b9fcabae586bb383a37b9daebb52f9

(this message was generated automatically)
-- 
Greetings

https://bugs.debian.org/1141820

We believe that the bug you reported is fixed in the latest version of
node-js-yaml, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1141820@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Xavier Guimard <yadd@debian.org> (supplier of updated node-js-yaml package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Wed, 19 Aug 2026 11:56:46 +0200
Source: node-js-yaml
Architecture: source
Version: 4.2.0+~4.0.9-2
Distribution: unstable
Urgency: medium
Maintainer: Debian Javascript Maintainers <pkg-javascript-devel@lists.alioth.debian.org>
Changed-By: Xavier Guimard <yadd@debian.org>
Closes: 1141820
Changes:
 node-js-yaml (4.2.0+~4.0.9-2) unstable; urgency=medium
 .
   * Team upload
   * Patch: replace `maxMergeSeqLength` option with `maxTotalMergeKeys`
     (Closes: #1141820, CVE-2026-59869)
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