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Missing SCIM token validation in Padloc exposes directory data

Priority MEDIUM 61CWE-306Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.

Summary

Padloc through 4.3.0 contains a missing authentication flaw in ScimServer._handleScimGet() (CWE-306). An unauthenticated remote attacker can read SCIM directories by sending any non-empty bearer token, because the token is not validated. An attacker who knows an organization id can retrieve provisioned usernames, emails, names, externalIds, and group memberships from the Users and Groups SCIM endpoints.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Description from the CNA

Padloc through 4.3.0 contains a missing authentication vulnerability in ScimServer._handleScimGet() that allows unauthenticated attackers to read SCIM directories by sending any non-empty bearer token. Attackers who know an organization id can query the Users and Groups SCIM endpoints to retrieve provisioned usernames, emails, names, externalIds, and group memberships.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00341 27th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
padlocpadlocup to 4.3.0—No fix listedCNA
  • padloc Vendorpadloc Affected up to 4.3.0 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Padloc.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Timeline

  1. 2026-11-03 Threatist record created from CVE-2026-121454
  2. 2026-11-03 Alias added: GHSA-8qrv-3gh4-gx4r
  3. 2026-11-05 Priority changed: MEDIUM → LOW
  4. 2026-11-07 CISA SSVC decision points changed
  5. 2026-11-07 Priority changed: LOW → MEDIUM

References

Sources