CVE-2026-6107 1Panel-dev CVE debrief

Who should care

Defenders responsible for 1Panel-dev MaxKB deployments should assess exposure and prioritize upgrading to version 2.8.0. This includes operators, security teams, and vulnerability management teams. The vulnerability affects 1Panel-dev MaxKB up to 2.6.1, and defenders should verify if their systems are using affected versions.

Why it matters

CVE-2026-6107 is a cross-site scripting vulnerability in 1Panel-dev MaxKB up to 2.6.1, allowing remote exploitation. Defenders should prioritize upgrading to version 2.8.0.

• Remote exploitation of this vulnerability could lead to the injection of malicious scripts, potentially allowing attackers to manipulate user interactions.
• Successful exploitation could result in the theft of sensitive information or unauthorized actions on behalf of the user.
• Defenders should verify if their systems are using affected versions of 1Panel-dev MaxKB and prioritize upgrading to version 2.8.0.
• The lack of specific details on exploitation in the wild means defenders must focus on verifying system versions and applying patches.

Technical summary

The ChatHeadersMiddleware component in 1Panel-dev MaxKB up to 2.6.1 is vulnerable to cross-site scripting. This allows remote attackers to inject malicious scripts. The issue is caused by inadequate input validation in the Name argument of the ChatHeadersMiddleware. The vulnerability is addressed in version 2.8.0. Defenders should prioritize upgrading to version 2.8.0 to address this vulnerability. The vulnerability has a CVSS score of 5.1 and a CVSS severity of MEDIUM. Successful exploitation could result in the theft of sensitive information or unauthorized actions on behalf of the user.

Defensive priority

Defenders should prioritize upgrading to version 2.8.0 to address this vulnerability.

Recommended defensive actions

• Upgrade to version 2.8.0
• Review and update affected systems
• Monitor for potential exploitation attempts
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record and NVD detail page provide information on this vulnerability, including its existence in 1Panel-dev MaxKB up to 2.6.1 and the availability of a fix in version 2.8.0. The vulnerability was publicly disclosed on 2026-04-12 and has not been modified since then. There is no evidence of exploitation in the wild, but defenders should verify if their systems are using affected versions of 1Panel-dev MaxKB and prioritize upgrading to version 2.8.0.

Sources and 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.