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CVE-2026-121802: better-auth Better Auth: @better-auth/expo before 1.7.16 allows certain account-takeover outcomes (e.g., unauthenticated changes of any…

🗓️ 04 Nov 2026 00:00:00Reported by Rapid7Type 
rapid7
 rapid7
🔗 www.rapid7.com👁 5 Views

@better-auth/expo before 1.7.16 allows certain account-takeover outcomes (e.g., unauthenticated changes of any account's email address), because it signs a caller-supplied state value without checking whether that value had been issued by the serv...

Related
Refs
ReporterTitlePublishedViews
Family
1dayexploit
1dayexploit
Better Auth (Expo plugin): Auth Bypass
4 Nov 202620:39
–1dayexploit
circl
Circl
CVE-2026-121802
4 Nov 202603:00
–circl
cve
CVE
CVE-2026-121802
4 Nov 202602:36
–cve
cvelist
Cvelist
CVE-2026-121802
4 Nov 202602:36
–cvelist
euvd
EUVD
EUVD-2026-116694
4 Nov 202602:36
–euvd
mend
Mend
CVE-2026-121802
4 Nov 202602:36
–mend
nvd
NVD
CVE-2026-121802
4 Nov 202603:17
–nvd
ptsecurity
Positive Technologies
PT-2026-136822
4 Nov 202600:00
–ptsecurity

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04 Nov 2026 00:00Current
6Medium risk
Vulners AI Score6
CVSS 3.19.1
EPSS0.00203
5