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TI-2026-75263 Aliases CVE-2026-109119GHSA-cq7f-c253-x96p

Privilege escalation in rdiffweb lets users become administrators

Priority MEDIUM 40CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

Rdiffweb before 2.10.6 is affected. Improper privilege management in the user management API endpoint /api/users/{username_or_id} lets an authenticated user gain administrator privileges (CWE-862). An attacker needs only a low-privileged account, requires no user interaction, and can gain high impact on confidentiality, integrity and availability over the network.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Improper Privilege Management in the user management API endpoint (/api/users/{username_or_id}) in Rdiffweb allows authenticated users to elevate their privileges to administrator by modifying the role parameter in a POST request.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0038 32nd percentileScored 2026-11-07
Fix Fixed rdiffweb (ikus-soft): 2.10.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
ikus060rdiffwebbefore 2.10.62.10.6Patch availableCNA
  • rdiffweb Vendorikus060 Affected before 2.10.6 Fixed in 2.10.6 Patch available CNA

Remediation

Update rdiffweb to version 2.10.6, which fixes the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA rdiffweb (ikus-soft) Fixed in 2.10.6

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-109119
  2. 2026-10-16 Alias added: GHSA-cq7f-c253-x96p
  3. 2026-10-18 Priority changed: LOW → MEDIUM

References

Other 3

  • TI-2022-03176 Allocation of Resources Without Limits or Throttling in ikus060/rdiffweb CVSS 3.1CRITICAL 9.8
  • TI-2022-03107 Insufficient Session Expiration in ikus060/rdiffweb CVSS 3.1CRITICAL 9.8
  • TI-2022-04320 Improper Access Control in ikus060/rdiffweb CVSS 3.1CRITICAL 9.8
  • TI-2022-04315 Business Logic Errors in ikus060/rdiffweb CVSS 3.1CRITICAL 9.8
  • TI-2022-03952 Improper Privilege Management in ikus060/rdiffweb CVSS 3.1CRITICAL 9.8
  • TI-2022-03191 Allocation of Resources Without Limits or Throttling in ikus060/rdiffweb CVSS 3.1CRITICAL 9.8
See all 45 →

Sources

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