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TI-2026-68412 Aliases CVE-2026-105835GHSA-vxgr-w3f5-4g4j

Brute force of TOTP codes in PLANKA via verify-totp endpoint

Priority MEDIUM 41CWE-307Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-307.

Summary

PLANKA 2.2.0 through 2.2.1 fails to limit incorrect TOTP codes submitted to the POST /api/access-tokens/verify-totp endpoint (CWE-307). An attacker who knows a user's password can reuse the ten-minute pending token to guess six-digit codes until one succeeds, obtaining a full access token.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

PLANKA 2.2.0 through 2.2.1 fails to limit incorrect TOTP codes submitted to POST /api/access-tokens/verify-totp, allowing attackers to brute force two-factor authentication codes. Attackers who know a user's password can reuse the ten-minute pending token to guess six-digit codes until one succeeds, obtaining a full access token.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00317 24th 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
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
plankaplanka2.2.0 – 2.2.1—No fix listedCNA
  • planka Vendorplanka Affected 2.2.0 – 2.2.1 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for PLANKA.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-06 Threatist record created from CVE-2026-105835
  2. 2026-10-06 Alias added: GHSA-vxgr-w3f5-4g4j
  3. 2026-10-07 Priority changed: MEDIUM → LOW
  4. 2026-10-09 CISA SSVC decision points changed
  5. 2026-10-09 Priority changed: LOW → MEDIUM

References

Patch 1

Other 2

  • TI-2022-02453 Path Traversal in plankanban/planka CVSS 3.1MEDIUM 6.5

Sources

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