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PatchSiren cyber security CVE debrief

CVE-2026-55237 Significant-Gravitas CVE debrief

CVE-2026-55237 is a high-severity DOM-based Cross-Site Scripting (XSS) vulnerability in AutoGPT's signup page. Versions prior to 0.6.62 are affected. An attacker can craft a malicious link that, when opened by an authenticated user, performs a client-side redirect and executes arbitrary JavaScript in the context of their browser. This could lead to credential theft, internal network pivoting, and unauthorized actions performed on behalf of the victim. The vulnerability has a CVSS score of 8.8 and is considered HIGH severity. AutoGPT has patched the issue in version 0.6.62. Users should update to the latest version to mitigate the vulnerability.

Vendor
Significant-Gravitas
Product
AutoGPT
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-18
Original CVE updated
2026-06-18
Advisory published
2026-06-18
Advisory updated
2026-06-18

Who should care

Security teams and administrators responsible for AutoGPT deployments should be aware of this vulnerability. Additionally, users who interact with AutoGPT's signup page, especially those with administrative privileges, are at risk of exploitation.

Technical summary

The vulnerability exists in AutoGPT's signup page, where the application improperly trusts a URL parameter ('next'), which is passed to 'router.push'. An attacker can craft a malicious link that, when opened by an authenticated user, performs a client-side redirect and executes arbitrary JavaScript in the context of their browser. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L.

Defensive priority

High

Recommended defensive actions

  • Update AutoGPT to version 0.6.62 or later
  • Implement additional security measures to monitor and restrict user interactions with the signup page
  • Educate users on the risks of clicking on suspicious links
  • Consider implementing a Web Application Firewall (WAF) to detect and prevent XSS attacks
  • Regularly review and update AutoGPT deployments to ensure the latest security patches are applied

Evidence notes

The vulnerability is confirmed by the CVE record and NVD detail. The source item URL provides additional information on the vulnerability. The security advisory from GitHub (GHSA-j2cp-jg5q-38wj) also provides details on the vulnerability and the patch.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-55237 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-55237

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-55237 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-55237

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.