CVE-2026-47841 json
WebAuthn User Verification Bypass via Session Serialization
published 2026-08-26 2 mo ago modified 2026-09-04 2 mo ago also EUVD-2026-66639
- cvss
- 7.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
An application using Spring Security's WebAuthn support may be vulnerable to user verification bypass when using a distributed HTTP session store. Spring Security 7.1.0 Spring Security 7.0.0 - 7.0.6 Spring Security 6.5.0 - 6.5.11 Spring Security 6.4.0 - 6.4.18
Patch / fix
- vmware spring_security 6.4.19, 6.5.12, 7.0.6.1, 7.1.0.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 mo ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
Affected products
- Spring Spring Security
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
- Technology feeds
References
-
spring.io
/security/cve-2026-47841
vendor-advisory
Sources
- CVE List CVE-2026-47841
- NVD CVE-2026-47841
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.