[From nobody Mon Apr 6 11:07:08 2026 Received: (at submit) by bugs.debian.org; 26 Feb 2026 21:43:36 +0000 X-Spam-Checker-Version: SpamAssassin 4.0.1-bugs.debian.org_2005_01_02 (2024-03-25) on buxtehude.debian.org X-Spam-Level: X-Spam-Status: No, score=-10.9 required=4.0 tests=BAYES_00,FOURLA, FROMDEVELOPER,MD5_SHA1_SUM,NO_RELAYS,XMAILER_REPORTBUG autolearn=ham autolearn_force=no version=4.0.1-bugs.debian.org_2005_01_02 X-Spam-Bayes: score:0.0000 Tokens: new, 51; hammy, 150; neutral, 149; spammy, 0. spammytokens: hammytokens:0.000-+--H*F:U*carnil, 0.000-+--XDebbugsCc, 0.000-+--X-Debbugs-Cc, 0.000-+--HTo:N*Debian, 0.000-+--H*Ad:N*Bug Return-path: <carnil@debian.org> Received: via submission by buxtehude.debian.org with esmtp (Exim 4.96) (envelope-from <carnil@debian.org>) id 1vvj8w-0070tG-3A for submit@bugs.debian.org; Thu, 26 Feb 2026 21:43:36 +0000 Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Salvatore Bonaccorso <carnil@debian.org> To: Debian Bug Tracking System <submit@bugs.debian.org> Subject: node-minimatch: CVE-2026-27903 CVE-2026-27904 Message-ID: <177214221404.4046065.13611752470820512569.reportbug@eldamar.lan> X-Mailer: reportbug 13.2.0 Date: Thu, 26 Feb 2026 22:43:34 +0100 Delivered-To: submit@bugs.debian.org Source: node-minimatch Version: 9.0.3-6 Severity: important Tags: security upstream X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org> Hi, The following vulnerabilities were published for node-minimatch. CVE-2026-27903[0]: | minimatch is a minimal matching utility for converting glob | expressions into JavaScript RegExp objects. Prior to version 10.2.3, | 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.3, `matchOne()` | performs unbounded recursive backtracking when a glob pattern | contains multiple non-adjacent `**` (GLOBSTAR) segments and the | input path does not match. The time complexity is O(C(n, k)) -- | binomial -- where `n` is the number of path segments and `k` is the | number of globstars. With k=11 and n=30, a call to the default | `minimatch()` API stalls for roughly 5 seconds. With k=13, it | exceeds 15 seconds. No memoization or call budget exists to bound | this behavior. Any application where an attacker can influence the | glob pattern passed to `minimatch()` is vulnerable. The realistic | attack surface includes build tools and task runners that accept | user-supplied glob arguments (ESLint, Webpack, Rollup config), | multi-tenant systems where one tenant configures glob-based rules | that run in a shared process, admin or developer interfaces that | accept ignore-rule or filter configuration as globs, and CI/CD | pipelines that evaluate user-submitted config files containing glob | patterns. An attacker who can place a crafted pattern into any of | these paths can stall the Node.js event loop for tens of seconds per | invocation. The pattern is 56 bytes for a 5-second stall and does | not require authentication in contexts where pattern input is part | of the feature. Versions 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, | 4.2.5, and 3.1.3 fix the issue. CVE-2026-27904[1]: | minimatch is a minimal matching utility for converting glob | expressions into JavaScript RegExp objects. Prior to version 10.2.3, | 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.4, nested `*()` | extglobs produce regexps with nested unbounded quantifiers (e.g. | `(?:(?:a|b)*)*`), which exhibit catastrophic backtracking in V8. | With a 12-byte pattern `*(*(*(a|b)))` and an 18-byte non-matching | input, `minimatch()` stalls for over 7 seconds. Adding a single | nesting level or a few input characters pushes this to minutes. This | is the most severe finding: it is triggered by the default | `minimatch()` API with no special options, and the minimum viable | pattern is only 12 bytes. The same issue affects `+()` extglobs | equally. Versions 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, | and 3.1.4 fix the issue. If you fix the vulnerabilities please also make sure to include the CVE (Common Vulnerabilities & Exposures) ids in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2026-27903 https://www.cve.org/CVERecord?id=CVE-2026-27903 [1] https://security-tracker.debian.org/tracker/CVE-2026-27904 https://www.cve.org/CVERecord?id=CVE-2026-27904 [2] https://github.com/isaacs/minimatch/security/advisories/GHSA-23c5-xmqv-rm74 [3] https://github.com/isaacs/minimatch/security/advisories/GHSA-7r86-cg39-jmmj [4] https://github.com/isaacs/minimatch/commit/0d4616de9193bf1d359271662e92657bb51b2f75 Please adjust the affected versions in the BTS as needed. Regards, Salvatore ]