# CERT-FR flags five Progress Telerik flaws

Published: 2026-11-13 · Severity: routine · Sectors: Technology
Canonical: https://vorant.io/reports/751613c7-b3e6-5fb5-a451-c5ea16fe0a58/cert-fr-flags-five-progress-telerik-flaws
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> CERT-FR warns of five vulnerabilities in Progress Telerik before 2026.3.1027 enabling DoS, data exposure and integrity impacts; patch available.

Source: cert.cyber.gouv.fr — https://www.cert.cyber.gouv.fr/avis/CERTFR-2026-AVI-1533

## What to check

- Applies to: The 5 CVEs named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation: No exploitation in the wild and no public exploit is recorded for the CVEs named.

CERT-FR issued an advisory covering five vulnerabilities in Progress Telerik's document-processing libraries affecting versions prior to 2026.3.1027. The flaws include an XML External Entity (XXE) reference issue (CVE-2026-118039), a path traversal vulnerability (CVE-2026-118038), and three uncontrolled resource consumption issues affecting SpreadProcessing (CVE-2026-118037), WordsProcessing (CVE-2026-118035), and PdfProcessing (CVE-2026-118036) components.

Exploitation of these vulnerabilities could allow an attacker to cause a remote denial of service, compromise data confidentiality, or undermine data integrity, and potentially bypass security policies depending on the specific flaw. No evidence of active exploitation in the wild is mentioned in the advisory.

CERT-FR recommends organizations consult Telerik's official security bulletins (published October 27-28, 2026) and apply the vendor-supplied patches to update to version 2026.3.1027 or later. Defenders using Telerik document-processing libraries should prioritize patching to mitigate these risks, particularly the XXE and path traversal issues which carry confidentiality and integrity risks.

## Mentioned in this report

- Vulnerabilities: CVE-2026-118035, CVE-2026-118036, CVE-2026-118037, CVE-2026-118038, CVE-2026-118039

Source reporting: https://www.cert.cyber.gouv.fr/avis/CERTFR-2026-AVI-1533

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