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CVE-2026-91982 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

Vikunja before 2.6.0 continues to expose the raw TOTP shared secret after enrollment through the GET /api/v1/user/settings/totp and /api/v1/user/settings/totp/qrcode endpoints without re-authentication. Attackers with a valid access token can read the secret, import it into their own authenticator, and generate valid codes indefinitely to defeat the second factor and enable account takeover.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CNA: [email protected]CVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-88f6-4rjv-x774	CISA-ADP	AdvisoryExploitRemedyVendor
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-88f6-4rjv-x774	[email protected]	AdvisoryExploitRemedyVendor
https://www.vulncheck.com/advisories/vikunja-before-2.6.0-totp-secret-disclosure-via-api	[email protected]	Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-522	Insufficiently Protected Credentials	[email protected]

Affected Products

Product	Versions
Vikunja	<= 2.5.0 (semver)
CPE No CPEs found in CPE dictionary for this product. Remediation Upgrade: 2.6.0moderate effort

Change History

2 change records found show changes

Date	Action	Recorded By
Sep 17, 2026	CVE Modified	CISA-ADP
Sep 15, 2026	New CVE Received	[email protected]