Vulnerability · Published Jul 10, 2026 · Assigned by VulnCheck
CVE-2026-56312Capgo - Account Creation Before CAPTCHA Validation in accept_invitation Endpoint
Medium 6.5
In plain English
A medium-severity improper authentication in Capgo from Capgo. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.4%top 68.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
References
- GitHub Security Advisory (GHSA-whc5-fvr7-g5v3) vendor-advisory
- VulnCheck Advisory: Capgo - Account Creation Before CAPTCHA Validation in accept_invitation Endpoint third-party-advisory