Description
The Bevy Event service through 2025-07-22, as used for eBay Seller Events and other activities, allows account takeover, if SSO is used, when a victim changes the email address that they have configured. To exploit this, an attacker would create their own account and perform an SSO login. The root cause of the issue is SSO misconfiguration.
Affected products
bevy: events and groups
References3
- gist.github.com/deep1chil/558e8da919690a634bec684e7c4d0ffe ExploitThird Party Advisory
- www.youtube.com/watch?v=wbmIvA09Ra8 Exploit
- bevy.com/b/events-and-groups Product
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - EPSS — exploit probability
- 0% percentile: 38 · as of 8 November 2026
- CWE
- CWE-284
Could this be exploited in your environment?
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