Administrator phishing via unvalidated support-request URLs
Published Mar 27, 2026 · Updated Mar 27, 2026
Improper URL validation in GlobaLeaks before 5.0.89 allows remote attackers to place arbitrary URLs in administrator support emails. The /api/support handler checks link formatting but fails to verify that the url parameter points to the GlobaLeaks platform before forwarding it as plain-text email. Exploitation is unauthenticated, but impact requires an administrator to open a submitted URL rendered as a link by the email client; the flaw does not expose data, modify the platform, or interrupt service.
Summary
What happened
Improper URL validation in GlobaLeaks before 5.0.89 allows remote attackers to place arbitrary URLs in administrator support emails. The /api/support handler checks link formatting but fails to verify that the url parameter points to the GlobaLeaks platform before forwarding it as plain-text email. Exploitation is unauthenticated, but impact requires an administrator to open a submitted URL rendered as a link by the email client; the flaw does not expose data, modify the platform, or interrupt service.
The record
- CVE
- CVE-2026-33284
- Published
- Mar 27, 2026
- Updated
- Mar 27, 2026
- Vendor
- GlobaLeaks
- Product
- GlobaLeaks
- Classifications
- CWE-20, T1566.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 27, 2026CVE publishedPublication date reported by the CVE source.
- Mar 27, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 5.0.89
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- Upstream /api/support crafted-URL proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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