CVE-2026-53981
Cap-go prior to 12.128.2 contains an account takeover vulnerability in its email change mechanism that allows an attacker with temporary authenticated session access to change the registered email address without re-authentication such as password or MFA verification. Attackers can redirect verification to an attacker-controlled email address and subsequently perform a password reset to permanently take over the victim's account.
Weakness
Cap-go prior to 12.128.2 contains an account takeover vulnerability in its email change mechanism that allows an attacker with temporary authenticated session access to change the registered email address without re-authentication such as password or MFA verification. Attackers can redirect verification to an attacker-controlled email address and subsequently perform a password reset to permanently take over the victim's account.
References
- https://github.com/Cap-go/capgo/commit/6685e5f11adef257bf3d085e481f4d8ebcec602e
- https://github.com/Cap-go/capgo/security/advisories/GHSA-w56g-jv78-hf79
- https://www.vulncheck.com/advisories/cap-go-account-takeover-via-unauthenticated-email-change-mechanism
- https://github.com/Cap-go/capgo/security/advisories/GHSA-w56g-jv78-hf79
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