Improper input validation in Globaleaks
CVE-2026-33284
GlobaLeaks is free and open-source whistleblowing software. Prior to version 5.0.89, the /api/support endpoint of GlobaLeaks performs minimal validation on user-submitted support requests. As a result, arbitrary URLs can be included in support emails sent to administrators. Version 5.0.89 patches the issue.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (19.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Globaleaks
- Globaleaks Globaleaks-Whistleblowing-Software — versions < 5.0.89
Weakness classification (CWE)
References
- github.com/globaleaks/globaleaks-whistleblowing-software/security/advisories/GH… (Exploit, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-33284?
- CVE-2026-33284 is a medium-severity vulnerability in Globaleaks, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2026-03-27.
- How severe is CVE-2026-33284?
- Medium severity. CVSS v3 base score is 4.3 out of 10.