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  4. CVE 2026 104656 cross site scripting in progress telerik fiddler
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Back to active CVEs
High · CVSS 7.3CVE-2026-104656

Cross-site Scripting in Progress Telerik Fiddler EverywhereCVE-2026-104656

Answer in brief

CVE-2026-104656 records a High severity (CVSS 7.3) vulnerability in Cross-site Scripting in Progress Telerik Fiddler Everywhere. The current sources do not mark it as known exploited. The current feed maps Progress Software/Progress® Telerik® Fiddler® Everywhere (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 6, 2026Updated Nov 6, 2026Source checked Nov 6, 2026First seen by HOL Nov 6, 2026Material review Nov 6, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 7.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Progress Software/Progress® Telerik® Fiddler® Everywhere (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Progress Software/Progress® Telerik® Fiddler® Everywheregeneric>=0 <8.3.08.3.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Progress Software/Progress® Telerik® Fiddler® Everywhere.
  2. 2Review the reported fix. Source-reported workaround: Do not open SAZ files from untrusted sources.

Evidence timeline and material changes

  1. Published upstream

    Nov 6, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 6, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 6, 2026

Sources and claim methodology

  • Source referencetelerik.com
Upstream source description

Improper neutralization of input in the sessions grid in Progress Telerik Fiddler Everywhere 8.3.0 and earlier allows an attacker to execute backend IPC commands by convincing a user to open a specially crafted SAZ file.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Usermin through 2.570 XSS via mailbox detach.cgi type ParameterAlso CWE-79

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Nov 6, 2026
References
1 linked source
Open source record