CVE-2026-93642
9.3 CRITICALPublished 2026-09-25 · Updated 2026-09-29
AI risk analysis
- Summary
- This vulnerability allows unauthenticated attackers to forge a share notification, leading to stored Cross-Site Scripting (XSS) and potential access to the victim's mailbox data.
- Exploitability
- Exploitation requires the victim to click on a forged share notification, making it somewhat dependent on user interaction.
- Blast radius
- If exploited, attackers can access the victim's mailbox data and potentially act as the victim, leading to significant data exposure.
- Detection
- No reliable host or network indicator is derivable from the published description.
- Prioritized remediation
- Disable the Accept Share feature until a patch is available or upgrade to the latest version of Zimbra Modern.
xsswebauth-bypassmailzimbra
Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.
NVD description
An unauthenticated sender can forge a share notification that triggers stored XSS when a signed-in Zimbra Modern recipient clicks Accept Share, allowing the attacker to access mailbox data and act as the victim.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Weaknesses
CWE-79
All references
Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.
Related CVEs
- CRITICALCVE-2026-93641
- MEDIUMCVE-2026-93339
- CRITICALCVE-2026-93647
- MEDIUMCVE-2025-71419PoC
- HIGHCVE-2026-16143
- CRITICALCVE-2026-18872
- MEDIUMCVE-2026-36468PoC
- MEDIUMCVE-2026-46650PoC
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