Mmastodon TechnologyCybersecurity first seen 6 d ago, last 6 d ago, peak #9
Critical auth bypass flaw hits Znuny ticketing system
Original: Znuny ≤7.3.6 vulnerable to CRITICAL auth bypass (CVE-2026-93483). Attackers can forge the 'Remote-User' HTTP header to a
A critical vulnerability, tracked as CVE-2026-93483, affects Znuny versions up to and including 7.3.6. Attackers can forge the 'Remote-User' HTTP header to gain access to any account, including administrator accounts. Security experts urge administrators to avoid HTTPBasicAuth deployments and to check the vendor's guidance for patches and mitigations while the flaw remains actively discussed in cybersecurity circles.
Why now: A newly disclosed critical authentication bypass lets attackers take over admin accounts, prompting urgent warnings to administrators.
Evidence
- Znuny ≤7.3.6 vulnerable to CRITICAL auth bypass (CVE-2026-93483). Attackers can forge the 'Remote-User' HTTP header to access any account, incl. admins. Avoid HTTPBasicAuth and check vendor guidance. https:// radar.offseq.com/threat/in-znu… · offseq@infosec.exchange · 1
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