Medium severity · published Mar 24, 2026
CVE-2026-33677
Webhook BasicAuth Credentials Exposed to Read-Only Project Collaborators via API
6.5
CVSS
0.3%
EPSS
No
On KEV
Description
Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.1, the `GET /api/v1/projects/:project/webhooks` endpoint returns webhook BasicAuth credentials (`basic_auth_user` and `basic_auth_password`) in plaintext to any user with read access to the project. While the existing code correctly masks the HMAC `secret` field, the BasicAuth fields added in a later migration were not given the same treatment. This allows read-only collaborators to steal credentials intended for authenticating against external webhook receivers. Version 2.2.1 patches the issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VI
vikunja · go-vikunja
< 2.2.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33677
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33677
Exploit
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-7c2g-p23p-4jg3
Release Notes
https://vikunja.io/changelog/vikunja-v2.2.2-was-released
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