Padloc 4.0.0 before 4.3.1 contains a prototype pollution vulnerability that allows SCIM token holders to modify
Source GCVE Database
Not known to be exploited · CVSS 7.0 High : upgrade to 4.3.1 soon.
Data as of 11 Nov 2026, 04:36 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 7.0 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 7.6 |
- Patch
- Available – fixed in 4.3.1
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:H/SC:N/SI:L/SA:HExploitation evidence
Disclosed: evidence found.
CVE published 11 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.
What to do
Upgrade padloc to 4.3.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| padlocpadloc | Affected
| Fixed in
|
GitHubpadlocpkg:github/padlocOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade Padloc to version 4.3.1 or later, where this prototype pollution vulnerability is fixed. Since the vulnerability affects versions before 4.3.1, applying this official fix is the recommended remediation. No alternative mitigations or workarounds are indicated.
Description
Padloc versions 4.0.0 up to but not including 4.3.1 contain a prototype pollution vulnerability. This flaw allows SCIM token holders to modify the Object.prototype by sending specially crafted SCIM PATCH requests to the ScimServer._handleScimUsersPatch() function. By manipulating paths such as __proto__.x or constructor.prototype.x, attackers can pollute the shared server process, potentially disrupting requests for all organizations served by that process. The vulnerability has a high severity rating with a CVSS score of 7.6.
References
- github.com/padloc/padloc/security/advisories/GHSA-crhv-mjrg-8vwm (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-126570 (opens in a new tab)
- github.com/padloc/padloc/commit/7dd3d230ef299c71ac215c802600b5f2358f7ba3 (opens in a new tab)
- github.com/padloc/padloc/blob/v4.3.0/packages/core/src/util.ts (opens in a new tab)
- github.com/padloc/padloc/blob/v4.3.0/packages/server/src/scim.ts (opens in a new tab)
- vulncheck.com/advisories/padloc-4.0.0-before-4.3.1-prototype-pollution-via-scim-patch-setpath (opens in a new tab)