CVE-2026-13186 — HIGH (8.1)

Q: How severe is CVE-2026-13186?

CVE-2026-13186 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-13186?

Check the references section above for vendor advisories and patch information. Affected products include: Progress Telerik Ui For Asp.Net Ajax.

Vulnerability Description

In Progress® Telerik® UI for AJAX prior to v2026.2.708, a path traversal vulnerability in the file-based persistence storage provider can be exploited when the storage key is derived from user-controlled input, enabling attacker-controlled deserialization and remote code execution.

CVSS Score

8.1

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Progress	Telerik Ui For Asp.Net Ajax	>= 2013.1.220, < 2026.2.708

Related Weaknesses (CWE)

CWE-22

References

https://www.telerik.com/products/aspnet-ajax/documentation/knowledge-base/kb-secVendor AdvisoryMitigation

FAQ

What is CVE-2026-13186?

CVE-2026-13186 is a vulnerability with a CVSS score of 8.1 (HIGH). In Progress® Telerik® UI for AJAX prior to v2026.2.708, a path traversal vulnerability in the file-based persistence storage provider can be exploited when the storage key is derived from user-control...

How severe is CVE-2026-13186?

CVE-2026-13186 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-13186?

Check the references section above for vendor advisories and patch information. Affected products include: Progress Telerik Ui For Asp.Net Ajax.