CVE-2026-21717 The advisory has been revoked - it doesn't affect any version of package nodejs24-devel (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ALMALINUX10-NODEJS24DEVEL-16081924
- published16 Apr 2026
- disclosed9 Apr 2026
Introduced: 9 Apr 2026
CVE-2026-21717 (opens in a new tab)Amendment
The AlmaLinux security team deemed this advisory irrelevant for AlmaLinux:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream nodejs24-devel package and not the nodejs24-devel package as distributed by AlmaLinux.
A flaw in V8's string hashing mechanism causes integer-like strings to be hashed to their numeric value, making hash collisions trivially predictable. By crafting a request that causes many such collisions in V8's internal string table, an attacker can significantly degrade performance of the Node.js process.
The most common trigger is any endpoint that calls JSON.parse() on attacker-controlled input, as JSON parsing automatically internalizes short strings into the affected hash table.
This vulnerability affects 20.x, 22.x, 24.x, and 25.x.
References
- https://errata.almalinux.org/9/ALSA-2026-7350.html
- https://errata.almalinux.org/8/ALSA-2026-7670.html
- https://errata.almalinux.org/10/ALSA-2026-7675.html
- https://access.redhat.com/security/cve/CVE-2026-21717
- https://access.redhat.com/errata/RHSA-2026:7350
- https://access.redhat.com/errata/RHSA-2026:7670
- https://access.redhat.com/errata/RHSA-2026:7675
- https://nodejs.org/en/blog/vulnerability/march-2026-security-releases