RCE in 1panel-Dev Maxkb
CVE-2026-6107
A flaw has been found in 1Panel-dev MaxKB up to 2.6.1. This issue affects some unknown processing of the file apps/common/middleware/chat_headers_middleware.py of the component ChatHeadersMiddleware. This manipulation of the argument Name causes cross site scripting. Remote exploitation of the attack is possible. Upgrading to version 2.8.0 is capable of addressing this issue. Patch name: 026a2d623e2aa5efa67c4834651e79d5d7cab1da. Upgrading the affected component is advised. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (27.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- 1panel-Dev Maxkb — versions 2.6.0, 2.6.1, 2.8.0
Weakness classification (CWE)
References
- vuldb.com/vuln/356966 (technical-description, vdb-entry)
- vuldb.com/vuln/356966/cti (signature, permissions-required)
- vuldb.com/submit/782263 (third-party-advisory)
- github.com/AnalogyC0de/public_exp/issues/24 (issue-tracking)
- github.com/1Panel-dev/MaxKB/pull/4919 (issue-tracking, patch)
- github.com/1Panel-dev/MaxKB/commit/026a2d623e2aa5efa67c4834651e79d5d7cab1da (patch)
- github.com/1Panel-dev/MaxKB/releases/tag/v2.8.0 (patch)
- github.com/1Panel-dev/MaxKB/ (product)
Frequently asked questions
- What is CVE-2026-6107?
- CVE-2026-6107 is a low-severity vulnerability in 1panel-Dev Maxkb, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2026-04-12.
- How severe is CVE-2026-6107?
- Low severity. CVSS v3 base score is 3.5 out of 10.