TI-2021-06155 Aliases CVE-2021-23518 GHSA-wg6g-ppvx-927h

Prototype pollution in cached-path-relative

MEDIUM 46CWE-1321Published 2022-01-21 · Updated 2024-09-16

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat.

Summary

The package cached-path-relative before 1.1.0 are vulnerable to Prototype Pollution via the cache variable that is set as {} instead of Object.create(null) in the cachedPathRelative function, which allows access to the parent prototype properties when the object is used to create the cached relative path. When using the origin path as __proto__, the attribute of the object is accessed instead of a path. **Note:** This vulnerability derives from an incomplete fix in https://security.snyk.io/vuln/SNYK-JS-CACHEDPATHRELATIVE-72573

Why it matters now

EPSS 0.01943 80th percentileScored 2026-11-07

Fix Partial cached-path-relative: 1.1.0cached-path-relative (npm): 1.1.0Red Hat: 1 advisoryRed Hat: 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	cached-path-relative	before 1.1.0	1.1.0	Patch available	CNA
—	cached-path-relative (npm)	before 1.1.0	1.1.0	Patch available	GHSA-wg6g-ppvx-927h

cached-path-relative Vendor— Affected before 1.1.0 Fixed in 1.1.0 Patch available CNA
cached-path-relative (npm) Vendor— Affected before 1.1.0 Fixed in 1.1.0 Patch available GHSA-wg6g-ppvx-927h

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:cached-path-relative_project:cached-path-relative::::::node.js::*	before 1.1.0	Vulnerable	Cached-path-relative Project
cpe:2.3:o:debian:debian_linux:10.0:::::::*	10.0	Vulnerable	Debian

cpe:2.3:a:cached-path-relative_project:cached-path-relative:*:*:*:*:*:node.js:*:* Versions before 1.1.0 Vulnerable ·Cached-path-relative Project
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian

Remediation

Fix · CNA cached-path-relative Fixed in 1.1.0
Fix · GHSA-wg6g-ppvx-927h cached-path-relative (npm) Fixed in 1.1.0 Advisory →

Red Hat 1 advisory

RHSA-2022:1476 Released 2022-04-21 · Red Hat rating Moderate
Red Hat Advanced Cluster Management 2.4.3 security updates and bug fixes
- Red Hat Advanced Cluster Management for Kubernetes 2.4 for RHEL 8 rhacm2/acm-grafana-rhel8, rhacm2/acm-must-gather-rhel8, rhacm2/acm-operator-bundle +47

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Advanced Cluster Management for Kubernetes 2	Affected	No fix yet

Timeline

2026-10-02 Threatist record created from CVE-2021-23518
2026-10-03 Alias added: GHSA-wg6g-ppvx-927h

References

Patch 1

https://github.com/ashaffer/cached-path-relative/commit/40c73bf70c58add5aec7d11e4f36b93d144bb760

Advisory 2

Other 1

https://github.com/ashaffer/cached-path-relative

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences