CVE-2026-12644
Last modified
CVE-2026-12644 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Versions of the package ts-deepmerge before 8.0.0 are vulnerable to Uncaught Exception due to the improper handling of built-in Object.prototype methods (such as toString, valueOf). When user-controlled input contains these keys with non-function values, the resulting merged object becomes broken — any string context operation throws a TypeError, crashing the application.. EPSS estimates a 0.31% chance of exploitation in the next 30 days.
Description
Versions of the package ts-deepmerge before 8.0.0 are vulnerable to Uncaught Exception due to the improper handling of built-in Object.prototype methods (such as toString, valueOf). When user-controlled input contains these keys with non-function values, the resulting merged object becomes broken — any string context operation throws a TypeError, crashing the application.
Metrics
Weakness Enumeration
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-12644?
How severe is CVE-2026-12644?
How do I fix CVE-2026-12644?
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-2026-126363Astro is a web framework for content-driven websites. From 0…2.3
- CVE-2026-126364Astro is a web framework for content-driven websites. From 5…6.3
- CVE-2026-126365Astro is a web framework for content-driven websites. Prior …5.4
- CVE-2026-126366MessagePack for Ruby is an implementation of the MessagePack…7.5
- CVE-2026-126367@grpc/grpc-js implements the core functionality of gRPC pure…4.8
- CVE-2026-1264IBM Sterling B2B Integrator and IBM Sterling File Gateway 6.…6.5
- CVE-2026-12645A Missing Authorization vulnerability in Ivanti Neurons for …8.8
- CVE-2026-12646A Missing Authorization vulnerability in Ivanti Neurons for …8.8
- CVE-2026-12647A Missing Authorization vulnerability in Ivanti Neurons for …8.8
- CVE-2026-12648A Deserialization of Untrusted Data vulnerability in Ivanti …8.8
- CVE-2026-126495MQTTX desktop through 1.13.3 contains a stored cross-site sc…6.1
- CVE-2026-1264961Panel-dev CordysCRM before 1.9.6 contains an authorization …4.3
Are you affected by CVE-2026-12644?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST