Is CVE-2026-53981 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-53981 being exploited in the wild.

How severe is CVE-2026-53981?

High severity, with a CVSS score of 7.6, published 12 June 2026.

Is there a fix for CVE-2026-53981?

A patch was published on 2026-06-12: Fix released in version 12.128.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-53981 attacked?

It is attacked over the network, in a hosted service.

Am I affected by CVE-2026-53981?

Check whether you run Cap-go at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-53981: Cap-go account takeover via insecure email change mechanism

CVE-2026-53981 · Severity: high · CVSS 7.6 · Published 2026-06-12

Cap-go, a platform for managing app updates and backend functions, contains a security flaw in how it handles user email updates. If an attacker gains temporary access to a logged-in user's session (for example, on a shared computer), they can change the account's email address to one they control without needing to provide the current password or multi-factor authentication. This allows the attacker to permanently lock the original owner out and take full control of the account by performing a password reset.

Technologies: Cap-go. Vendors: Cap-go.

Quick answers

Is CVE-2026-53981 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-53981 being exploited in the wild.
How severe is CVE-2026-53981?: High severity, with a CVSS score of 7.6, published 12 June 2026.
Which products and versions are affected?: Cap-go < 12.128.2.
Is there a fix for CVE-2026-53981?: A patch was published on 2026-06-12: Fix released in version 12.128.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-53981 attacked?: It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-53981?: Check whether you run Cap-go at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A Missing Authentication for Critical Function (CWE-306) vulnerability exists in Cap-go's email change workflow. The application fails to require re-authentication (password or MFA) or send a confirmation notice to the existing email address when a change is requested. An attacker with access to an active authenticated session can update the account email to an attacker-controlled address, verify the new email via a link sent only to that new address, and then use the password reset functionality to achieve full account takeover. This issue is resolved in version 12.128.2.

Affected products

Cap-go Cap-go < 12.128.2

Timeline

2026-02-10: advisory: GitHub Security Advisory published
2026-06-12: disclosed: CVE published to NVD
2026-06-12: patched: Fix released in version 12.128.2

References

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