Input Neutralization Flaw in Progress Telerik Fiddler Everywhere
CVE-2026-104656

7.3HIGH

Key Information:

Vendor

Progress Software
Status
Progress® Telerik® Fiddler® Everywhere
Vendor
CVE Published:
6 November 2026

What is CVE-2026-104656?

An input neutralization flaw in Progress Telerik Fiddler Everywhere versions 8.3.0 and earlier permits attackers to execute backend IPC commands. This is accomplished by tricking users into opening a specially crafted SAZ file that exploits the sessions grid feature. The vulnerability underscores the importance of input validation to protect users from attacking vectors that exploit application weaknesses.

Affected Version(s)

Progress® Telerik® Fiddler® Everywhere 0 < 8.3.0

References

https://www.telerik.com/fiddler/fiddler-everywhere/docume...
vendor-advisory

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

maxsongce8805
.