PT-2026-51159 · Cap Go · Cap-Go

Muhnabil04 · Published 2026-06-20 · Updated 2026-06-20 · CVE-2026-56332

Positive Technologies (AI Summary)

CVSS v3.1

4.7

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Capgo versions prior to 12.128.2

Description An open redirect issue exists in the 'confirm-signup' endpoint. The confirmation url parameter is not validated, which allows attackers to redirect users to arbitrary external websites. This can be used to facilitate phishing and credential harvesting attacks.

Recommendations Update to version 12.128.2 or later. As a temporary workaround, restrict access to the 'confirm-signup' endpoint or avoid using the confirmation url parameter until the update is applied.

Fix

Open Redirect

Weakness Enumeration

CWE-601

Related Identifiers

CVE-2026-56332

Affected Products

Cap-Go

References · 5

• https://github.com/Cap-go/capgo/security/advisories/GHSA-24q8-ghqq-m8cj · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-56332 · Security Note
• https://twitter.com/infoflowcloud/status/2068382376607051829 · Twitter Post
• https://vulncheck.com/advisories/capgo-open-redirect-via-confirmation-url-parameter · Note
• https://twitter.com/CVEnew/status/2068380898072875302 · Twitter Post