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TI-2026-81958 Aliases CVE-2026-118040GHSA-wr2c-qfj2-22f2

Improper signature validation in Telerik RadPdfProcessing accepts forged PDFs

Priority LOW 37CWE-295Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Spoofing, Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-295 and CWE-347.

Summary

Progress Telerik Document Processing Libraries before 2026.3.1027 contain improper verification of cryptographic signatures and improper certificate validation in RadPdfProcessing digital signature validation. An unauthenticated remote attacker can use a crafted signed PDF document to make signature validation report forged content as unmodified and its signing certificate as valid.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

In Progress® Telerik® Document Processing Libraries prior to version 2026.3.1027, improper verification of cryptographic signatures and improper certificate validation in RadPdfProcessing digital signature validation allow an unauthenticated attacker to cause signature validation to report forged content as unmodified and its signing certificate as valid via a crafted signed PDF document.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00089 0th percentileScored 2026-11-07
Fix Fixed Telerik Document Processing Libraries (Progress Software): 2026.3.1027

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ProgressTelerik Document Processing Librariesbefore 2026.3.10272026.3.1027Patch availableCNA
  • Telerik Document Processing Libraries VendorProgress Affected before 2026.3.1027 Fixed in 2026.3.1027 Patch available CNA

Remediation

Update Telerik Document Processing Libraries to version 2026.3.1027 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA Telerik Document Processing Libraries (Progress Software) Fixed in 2026.3.1027

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Progress Software Telerik Document Processing Libraries 2026.3.1027

    6 records Highest priority Priority LOW 6 LOW

    Other records, highest priority first

    • TI-2026-81955 Uncontrolled resource consumption in Telerik Document Processing LibrariesPriority LOW 39
    • TI-2026-81954 Uncontrolled resource consumption in Telerik Document Processing LibrariesPriority LOW 39
    • TI-2026-81953 Uncontrolled resource consumption in Telerik Document Processing LibrariesPriority LOW 39
    Show all 6 records →

Timeline

  1. 2026-10-28 Threatist record created from CVE-2026-118040
  2. 2026-10-28 Alias added: GHSA-wr2c-qfj2-22f2
  3. 2026-10-30 Priority changed: MEDIUM → LOW
  4. 2026-11-06 CISA SSVC decision points changed

References

Advisory 1

  • TI-2026-07083 Command injection in Progress LoadMaster KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-06182 WhatsUp Gold HasErrors SQL Injection Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-04541 WhatsUp Gold GetFileWithoutZip Directory Traversal Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-04060 Registration Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-01127 LoadMaster Pre-Authenticated OS Command Injection KEVCVSS 3.1CRITICAL 10.0
  • TI-2023-20934 WS_FTP Server Ad Hoc Transfer Module .NET Deserialization Vulnerability KEVCVSS 3.1CRITICAL 10.0
See all 436 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences