scim-patch: Mutation of Inherited Built-in Method Objects

[ Why it matters ]Priority signals

• Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

scim-patch is a library for applying SCIM patch operations. Prior to 0.9.2, navigate() reads inherited properties and assign() uses prototype-chain membership checks while resolving attacker-controlled SCIM PATCH paths. A path or one of the dotted value keys beginning with an inherited property such as toString can therefore traverse into a shared built-in function object and add attacker-controlled properties, causing process-global mutation that may affect application logic reading inherited-method properties. This issue is fixed in version 0.9.2.

[ Fixes ]Fixes and patches

• scim-patch 0.9.2Fixed version · GitHub Advisories · npm package scim-patch: upgrade to 0.9.2 or later (affected < 0.9.2)

[ Packages ]Affected open-source packages

• scim-patch npmAffected < 0.9.2 · fixed in 0.9.2 · GHSA-2mhw-wcx5-v3xj

[ References ]References

• github.com/thomaspoignant/scim-patch/commit/c86474f7a9b16191d939f59ba94eca6c6e63044b
• github.com/thomaspoignant/scim-patch/pull/1127
• github.com/thomaspoignant/scim-patch/releases/tag/v0.9.2
• github.com/thomaspoignant/scim-patch/security/advisories/GHSA-2mhw-wcx5-v3xj