CVE-2026-126570 json
Padloc 4.0.0 before 4.3.1 Prototype Pollution via SCIM PATCH setPath()
published 2d ago modified yesterday also EUVD-2026-123084 , GHSA-crhv-mjrg-8vwm
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository padloc/padloc. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 7.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 37%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Is CVE-2026-126570 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
0.42% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:H/SC:N/SI:L/SA:H |
| CNA | 3.1 | 7.6 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H |
| CNA | 4.0 | 7.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:H/SC:N/SI:L/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 7.6 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H |
Affected products
- padloc padloc
Classification
- Weakness
-
- CWE-1321 Improperly Controlled Modification of Object Prototype Attributes
References
-
github.com
/padloc/padloc/commit/7dd3d230ef299c71ac215c802600b5f2358f7ba3
patch
-
github.com
/padloc/padloc/security/advisories/GHSA-crhv-mjrg-8vwm
vendor-advisory, advisory
-
github.com
/padloc/padloc/blob/v4.3.0/packages/server/src/scim.ts#L421-L428
technical-description
-
github.com
/padloc/padloc/blob/v4.3.0/packages/core/src/util.ts#L239-L251
technical-description
-
vulncheck.com
/advisories/padloc-4.0.0-before-4.3.1-prototype-pollution-via-scim-patch-setpath
third-party-advisory
Sources
- CVE List CVE-2026-126570
- NVD CVE-2026-126570
- Maintainer advisory GHSA-crhv-mjrg-8vwm
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of padloc/padloc published their own advisory on GitHub. Reviewed sources take precedence over it.