CVE-2026-126570

Description

Padloc 4.0.0 before 4.3.1 contains a prototype pollution vulnerability that allows SCIM token holders to modify Object.prototype by sending crafted SCIM PATCH paths to ScimServer._handleScimUsersPatch(). Attackers can supply paths like __proto__.x or constructor.prototype.x passed to setPath() to pollute the shared server process, disrupting requests for all other organizations.

References

• https://github.com/padloc/padloc/blob/v4.3.0/packages/core/src/util.ts#L239-L251
• https://github.com/padloc/padloc/blob/v4.3.0/packages/server/src/scim.ts#L421-L428
• https://github.com/padloc/padloc/commit/7dd3d230ef299c71ac215c802600b5f2358f7ba3
• https://github.com/padloc/padloc/security/advisories/GHSA-crhv-mjrg-8vwm
• https://www.vulncheck.com/advisories/padloc-4.0.0-before-4.3.1-prototype-pollution-via-scim-patch-setpath