What is CVE-2026-13183?

CVE-2026-13183 is a high-severity vulnerability in Progress Telerik Ui For Asp.net Ajax, classified under CWE-208. CVSS score: 7.5/10. Published 2026-07-22.

How severe is CVE-2026-13183?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Progress Telerik Ui For Asp.net Ajax

CVE-2026-13183

In Progress® Telerik® UI for AJAX prior to v2026.2.708, RadAsyncUpload upload metadata processing may leak cryptographic validity through measurable timing differences, enabling remote attackers to recover protected metadata values.

EPSS: 0.005 (43.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Progress Telerik_ui_for_asp.net_ajax
Progress Software Telerik Ui For Asp.net Ajax — versions 2010.1.309

Weakness classification (CWE)

CWE-208

References

security@progress.com (vendor-advisory, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-13183?: CVE-2026-13183 is a high-severity vulnerability in Progress Telerik Ui For Asp.net Ajax, classified under CWE-208. CVSS score: 7.5/10. Published 2026-07-22.
How severe is CVE-2026-13183?: High severity. CVSS v3 base score is 7.5 out of 10.