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TI-2026-70156 Aliases CVE-2026-62376GHSA-r6w9-259g-gwrv

Plaintext token storage in Vikunja enables account takeover

Priority HIGH 70CWE-312Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-312.

Summary

Vikunja versions before 2.4.0 store password-reset, email-confirmation and account-deletion tokens in plaintext in the user_tokens table (CWE-312). An attacker who can read the database, for example through a backup leak, misconfigured storage or SQL-level exposure, can use pending tokens to take over user accounts without knowing passwords.

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

Description from the CNA

Vikunja is an open-source self-hosted task management platform. Versions prior to 2.4.0 store password-reset, email-confirmation, and account-deletion tokens in the `user_tokens` table in plaintext. If an attacker gains read access to the database through a backup leak, misconfigured storage, or SQL-level exposure, they can immediately use pending tokens to take over user accounts without knowing passwords. Version 2.4.0 fixes the issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00276 20th percentileScored 2026-11-07
Fix Fixed vikunja (go-vikunja): 2.4.0code.vikunja.io/api (Go): 2.4.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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
go-vikunjavikunjabefore 2.4.02.4.0Patch availableCNA
—code.vikunja.io/api (Go)before 2.4.02.4.0Patch availableGHSA-r6w9-259g-gwrv
  • vikunja Vendorgo-vikunja Affected before 2.4.0 Fixed in 2.4.0 Patch available CNA
  • code.vikunja.io/api (Go) Vendor— Affected before 2.4.0 Fixed in 2.4.0 Patch available GHSA-r6w9-259g-gwrv

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:*——go-vikunja
  • cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:* Versions — — ·go-vikunja

Remediation

Upgrade Vikunja to version 2.4.0, which fixes the issue. The Go module code.vikunja.io/api is fixed in 2.4.0 as well.

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

  • Fix · CNA vikunja (go-vikunja) Fixed in 2.4.0
  • Fix · GHSA-r6w9-259g-gwrv code.vikunja.io/api (Go) Fixed in 2.4.0 Advisory →

Timeline

  1. 2026-10-10 Threatist record created from CVE-2026-62376
  2. 2026-10-10 Alias added: GHSA-r6w9-259g-gwrv
  3. 2026-10-10 Fix available: Go/code.vikunja.io/[email protected] · GHSA-r6w9-259g-gwrv
  4. 2026-10-10 CVSS score added · GHSA-r6w9-259g-gwrv
  5. 2026-10-10 Weakness changed · GHSA-r6w9-259g-gwrv
  6. 2026-10-10 6 new references · GHSA-r6w9-259g-gwrv
  7. 2026-10-11 Priority changed: MEDIUM → LOW
  8. 2026-10-13 CISA SSVC decision points changed
  9. 2026-10-13 Priority changed: LOW → HIGH

References

Other 6

  • TI-2026-40929 Authorization bypass in go-vikunja Vikunja CVSS 4.0CRITICAL 9.3
  • TI-2026-21967 Vijkunja has Weak Password Policy Combined with Persistent Sessions After Password Change CVSS 3.1CRITICAL 9.1
  • TI-2026-62115 Vikunja before 2.6.0 Privilege Escalation via Link Share Hash CVSS 4.0HIGH 8.7
  • TI-2026-62108 Vikunja before 2.6.0 Authentication Bypass via CalDAV BasicAuth CVSS 4.0HIGH 8.7
  • TI-2026-62107 Vikunja before 2.6.0 Authentication Bypass via Unthrottled API CVSS 4.0HIGH 8.7
  • TI-2026-26971 Vikunja ahs a TOTP Two-Factor Authentication Bypass via OIDC Login Path CVSS 3.1CRITICAL 9.1
See all 105 →

Sources

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