CVE-2026-77522: MaxKB knowledge web-document crawler server-side request forgery

CVE-2026-77522 · Severity: medium · CVSS 4.3 · Published 2026-09-21

MaxKB is an open-source AI assistant that helps enterprises manage knowledge documents. An authenticated user can trick the document import crawler into fetching URLs on internal networks or cloud metadata services, allowing them to read sensitive data like cloud credentials or internal API responses. This could lead to full compromise of cloud accounts or exposure of confidential internal systems.

Technologies: 1Panel-dev MaxKB. Vendors: 1Panel-dev.

Quick answers

Is CVE-2026-77522 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-77522 being exploited in the wild.
How severe is CVE-2026-77522?
Medium severity, with a CVSS score of 4.3, published 21 September 2026.
Which products and versions are affected?
1Panel-dev MaxKB 2.10.3-lts and earlier.
Is there a fix for CVE-2026-77522?
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-2026-77522 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-77522?
Check whether you run 1Panel-dev MaxKB 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

The vulnerability is a non-blind server-side request forgery (SSRF) in the Fork crawler used for web-document import and synchronization. The crawler accepts user-supplied URLs and calls requests.get with verify=False, no URL scheme validation, and no blocklist for loopback, link-local, or private IP ranges; the fetched response body is returned to the authenticated user. An attacker with any authenticated workspace user role can target internal services (127.0.0.1, 169.254.169.254) or private networks to exfiltrate cloud metadata, credentials, or internal API responses.

Affected products

  • 1Panel-dev MaxKB 2.10.3-lts and earlier

Timeline

  • 2026-09-21: disclosed
  • other: No fixed version available as of advisory review

References

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