Quick answers
- Is CVE-2026-106133 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-106133 being exploited in the wild.
- How severe is CVE-2026-106133?
- Medium severity, with a CVSS score of 6.3, published 11 November 2026.
- Which products and versions are affected?
- Progress Telerik Report Server prior to 12.3.26.1110.
- Is there a fix for CVE-2026-106133?
- Yes: fixed in 12.3.26.1110. Until then: After upgrading to version 12.3.26.1110, sign in as System Administrator and enable "Deny shared write access to resources for users in non-administrative roles" under Configuration > Designer > Web Report Designer, then select Save Changes. Note that this setting is disabled by default and must be manually enabled; existing shared assets without a recorded creator will remain writable under existing access rules even after enabling this setting. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-106133 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-106133?
- Check whether you run Progress Telerik Report Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 12.3.26.1110
After upgrading to version 12.3.26.1110, sign in as System Administrator and enable "Deny shared write access to resources for users in non-administrative roles" under Configuration > Designer > Web Report Designer, then select Save Changes. Note that this setting is disabled by default and must be manually enabled; existing shared assets without a recorded creator will remain writable under existing access rules even after enabling this setting.
Technical details
The vulnerability is an incorrect authorization check (CWE-863) in the Web Report Designer that fails to properly enforce access controls on shared report resources. An authenticated attacker with low privileges can bypass authorization and perform unauthorized modifications or deletions on shared reports. The issue is fixed in version 12.3.26.1110; a mitigation requiring admin action is to enable "Deny shared write access to resources for users in non-administrative roles" in Configuration > Designer > Web Report Designer after upgrading.
Affected products
- Progress Telerik Report Server prior to 12.3.26.1110
Timeline
- 2026-11-11: disclosed: CVE-2026-106133 published