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VulnerabilityPublished

CVE-2026-118976: Progress Software Telerik UI for Blazor · Relative Path Traversal

Affects Progress Software Telerik UI for BlazorSource CVE Database V5

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Not known to be exploited · CVSS 7.5 High : upgrade to 14.1.0 soon.

Data as of 13 Nov 2026, 14:49 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (ProgressSoftware)CVSS 3.17.5
Patch
Available – fixed in 14.1.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Upgrade Progress Software Telerik UI for Blazor to 14.1.0.

Affected software

ProductAffectedFixed in
Progress SoftwareTelerik UI for BlazorAffected
  • >=11.1.0 <14.1.0
Fixed in
  • 14.1.0

AI-suggested

Upgrade Telerik UI for Blazor to version 14.1.0 or later, where this vulnerability is fixed. No other mitigations are specified or required.

Description

CVE-2026-118976 is a relative path traversal vulnerability in Progress Software's Telerik UI for Blazor demo application's Chat AI Integration example. It affects versions 11.1.0 through 14.0.0 and allows an attacker to read files outside the intended chat attachments folder within the server's filesystem. The vulnerability has a high severity with a CVSS score of 7.5. A fix is available in version 14.1.0.

References

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