CVE-2026-22102 EVbee CVE debrief

Who should care

System administrators and security teams responsible for managing webserver endpoints should be aware of CVE-2026-22102, as it can lead to severe consequences if exploited. They should verify and restrict access to the vulnerable endpoint, implement input validation and sanitization for the filename parameter, and monitor system files and shell-scripts for unauthorized modifications.

Technical summary

CVE-2026-22102 is a critical vulnerability with a CVSS score of 9.3. A POST request to a specific webserver endpoint can be used to write to arbitrary file locations. The endpoint accepts the filename parameter in the Content-Disposition header without verification. This can be used to cause a denial of service by overwriting system files or remote-code-execution by overwriting shell-scripts which execution can be triggered through other means. The vulnerability affects webserver deployments and has a high impact on confidentiality, integrity, and availability.

Defensive priority

High

Recommended defensive actions

• Verify and restrict access to the vulnerable endpoint
• Implement input validation and sanitization for the filename parameter
• Monitor system files and shell-scripts for unauthorized modifications
• Apply patches or updates provided by the vendor
• 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 was published on 2026-07-13T10:16:27.783Z and has not been modified since then. The NVD entry is currently Received. There is limited evidence available to confirm affected scope and severity. Defenders should verify system files and shell-scripts for unauthorized modifications.

Official resources