Is CVE-2026-55237 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-55237 being exploited in the wild.

How severe is CVE-2026-55237?

High severity, with a CVSS score of 8.8, published 18 June 2026.

Which products and versions are affected?

Significant-Gravitas AutoGPT < 0.6.62.

Is there a fix for CVE-2026-55237?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-55237 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-55237?

Check whether you run Significant-Gravitas AutoGPT 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-2026-55237: Significant-Gravitas AutoGPT DOM-based XSS in signup page

Q: Is there a fix for CVE-2026-55237?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

Q: How is CVE-2026-55237 attacked?

It is attacked over the network, in a network appliance.

Q: Am I affected by CVE-2026-55237?

Check whether you run Significant-Gravitas AutoGPT 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-2026-55237 · Severity: high · CVSS 8.8 · Published 2026-06-18

AutoGPT, a platform for managing AI agents, contains a security flaw in its signup page. An attacker can send a specially crafted link to a user that, when clicked, executes malicious code in the user's web browser. This could allow the attacker to steal login credentials, perform unauthorized actions on the user's behalf, or gain a foothold to attack internal systems.

Technologies: Significant-Gravitas AutoGPT. Vendors: Significant-Gravitas.

Quick answers

Is CVE-2026-55237 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-55237 being exploited in the wild.
How severe is CVE-2026-55237?: High severity, with a CVSS score of 8.8, published 18 June 2026.
Which products and versions are affected?: Significant-Gravitas AutoGPT < 0.6.62.
Is there a fix for CVE-2026-55237?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-55237 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-55237?: Check whether you run Significant-Gravitas AutoGPT 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 DOM-based Cross-Site Scripting (XSS) vulnerability exists in AutoGPT's signup page component (useSignupPage.ts). The application retrieves a redirect destination from the 'next' URL query parameter and passes it directly to Next.js's 'router.push' or 'router.replace' without validation. Because these functions eventually sink into 'window.location', an attacker can use the 'javascript:' protocol to execute arbitrary code. Exploitation requires a victim to click a malicious link; if the victim is already authenticated, the script executes immediately, whereas unauthenticated users trigger the payload upon completing the signup flow. This can lead to session hijacking, API abuse, or credential theft. The issue is resolved in version 0.6.62 by implementing origin and protocol validation on redirect parameters.

Affected products

Significant-Gravitas AutoGPT < 0.6.62

Timeline

2026-03-25: other: Vulnerability reported to vendor
2026-06-17: advisory: GitHub Security Advisory published
2026-06-18: disclosed: NVD disclosure date

References

https://github.com/Significant-Gravitas/AutoGPT/security/advisories/GHSA-j2cp-jg5q-38wj

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