Is CVE-2026-33677 actively exploited?

No active exploitation of CVE-2026-33677 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-33677 be exploited remotely?

Yes. CVE-2026-33677 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-33677?

CVE-2026-33677 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2026-33677

CWE-200Published: March 24, 2026· Updated: Mar 27, 2026

6.5

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:8.7th

Official 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.

NVD Source

Technical Analysis

CVE-2026-33677 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 6.5.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.