CVE-2026-23956
Last modified
CVE-2026-23956 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 0.2.0 through 1.4.0, overriding RegExp serialization with extremely large patterns can exhaust JavaScript runtime memory during deserialization. EPSS estimates a 0.48% chance of exploitation in the next 30 days.
Description
seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 0.2.0 through 1.4.0, overriding RegExp serialization with extremely large patterns can exhaust JavaScript runtime memory during deserialization. Additionally, overriding RegExp serialization with patterns that trigger catastrophic backtracking can lead to ReDoS (Regular Expression Denial of Service). This issue has been fixed in version 1.4.1.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Lxsmnsyc | Seroval | < 1.4.1 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2026-23956?
How severe is CVE-2026-23956?
How do I fix CVE-2026-23956?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-23950node-tar,a Tar for Node.js, has a race condition vulnerabili…5.9
- CVE-2026-23951SumatraPDF is a multi-format reader for Windows. All version…5.5
- CVE-2026-23952ImageMagick is free and open-source software used for editin…7.5
- CVE-2026-23953Incus is a system container and virtual machine manager. In …8.7
- CVE-2026-23954Incus is a system container and virtual machine manager. Ver…8.7
- CVE-2026-23955EVerest is an EV charging software stack. Prior to version 2…4.2
- CVE-2026-23957seroval facilitates JS value stringification, including comp…7.5
- CVE-2026-23958Dataease is an open source data visualization analysis tool.…9.8
- CVE-2026-23959CoreShop is a Pimcore enhanced eCommerce solution. An error-…4.9
- CVE-2026-2396The List View Google Calendar plugin for WordPress is vulner…4.4
- CVE-2026-23960Argo Workflows is an open source container-native workflow e…5.4
- CVE-2026-23961Mastodon is a free, open-source social network server based …5.3
Are you affected by CVE-2026-23956?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST