CVE-2026-56312
MEDIUMCapgo - Account Creation Before CAPTCHA Validation in accept_invitation Endpoint
Title source: cnaDescription
Capgo before 12.128.2 contains an improper validation vulnerability in the accept_invitation endpoint that creates user accounts before captcha validation is enforced. Attackers can bypass captcha protection by sending POST requests with invalid captcha tokens to create unwanted accounts and burn invite links.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-whc5-fvr7-g5v3)
https://github.com/Cap-go/capgo/security/advisories/GHSA-whc5-fvr7-g5v3
Third Party Advisory third-party-advisory
VulnCheck Advisory: Capgo - Account Creation Before CAPTCHA Validation in accept_invitation Endpoint
https://www.vulncheck.com/advisories/capgo-account-creation-before-captcha-validation-in-accept-invitation-endpoint
Scores
CVSS v3
6.5
EPSS
0.0027
EPSS Percentile
19.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-287
Status
published
Products (2)
Capgo/Capgo
< 12.128.2
Capgo/Capgo
12.128.2
Published
Jul 10, 2026
Tracked Since
Jul 10, 2026