CVE-2026-48170

Published: Ago 08, 2026 Last Modified: Ago 08, 2026
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 9,1
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: changed
Confidentiality: low
Integrity: high
Availability: low

Description

AI Translation Available

`scim-patch`, a library to perform SCIM patch, prior to version 0.9.1 performs prototype pollution when applying a SCIM PATCH operation whose `value` object contains a key like `'__proto__.someProp'`. After one such patch,
`Object.prototype.someProp` is set process-wide, affecting every plain object in the Node process. Any service that calls `scimPatch()` on attacker-controlled JSON (i.e. any SCIM endpoint accepting `PATCH` from an external IdP) is exploitable on a stock Node runtime. Version 0.9.1 contains a patch. A workaround is available. Calling `Object.freeze(Object.prototype)` (and the same on `Array.prototype`, `Function.prototype`) at process startup neutralizes this class of bug — assignment to a frozen prototype becomes a silent no-op in sloppy mode or a `TypeError` in strict mode. Node's `--frozen-intrinsics` flag does this for built-ins automatically.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0025
Percentile
0,2th
Updated

EPSS Score Trend (Last 2 Days)

1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Incomplete
Abstraction: Variant Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Integrity Availability
Potential Impacts:
Read Application Data Modify Application Data Dos: Crash, Exit, Or Restart
Applicable Platforms
Languages: JavaScript
View CWE Details
https://github.com/thomaspoignant/scim-patch/commit/260f9cd…
https://github.com/thomaspoignant/scim-patch/commit/260f9cd2ac5ceac3976978850bb…
https://github.com/thomaspoignant/scim-patch/security/advis…
https://github.com/thomaspoignant/scim-patch/security/advisories/GHSA-9m6g-wc8r…