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Description

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.

PUBLISHED Reserved 2026-06-11 | Published 2026-06-12 | Updated 2026-06-12 | Assigner VulnCheck




HIGH: 7.2CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N

HIGH: 7.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

Problem types

CWE-306 Missing Authentication for Critical Function

Product status

Default status
affected

Any version before 12.128.2
affected

6685e5f11adef257bf3d085e481f4d8ebcec602e (git)
unaffected

Credits

Naitik Gupta finder

References

github.com/.../capgo/security/advisories/GHSA-w56g-jv78-hf79 exploit

github.com/.../capgo/security/advisories/GHSA-w56g-jv78-hf79 vendor-advisory

github.com/...ommit/6685e5f11adef257bf3d085e481f4d8ebcec602e patch

www.vulncheck.com/...-unauthenticated-email-change-mechanism third-party-advisory

cve.org (CVE-2026-53981)

nvd.nist.gov (CVE-2026-53981)

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