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CVE-2026-61834— scim-patch: Mutation of Inherited Built-in Method Objects

Quick assessment

Affected
thomaspoignant scim-patch
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 b

CVSS 4.3 · Medium
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I. Basic Information for CVE-2026-61834

Vulnerability Information

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Vulnerability Title
scim-patch: Mutation of Inherited Built-in Method Objects
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-915
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
thomaspoignant scim-patch < 0.9.2 -

II. Public POCs for CVE-2026-61834

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III. Intelligence Information for CVE-2026-61834

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Patches & Fixes for CVE-2026-61834 (4)

IV. Related Vulnerabilities

Same product: scim-patch
Same vendor: thomaspoignant
Same weakness: CWE-915

V. Comments for CVE-2026-61834

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