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Fencer Vulns
high 7.3

CVE-2026-104656 json

Cross-site Scripting in Progress Telerik Fiddler Everywhere

published 2026-11-06 2 d ago modified 2026-11-06 2 d ago also EUVD-2026-118359

cvss
7.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 6%
public exploits
0
none known

Summary

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.

Patch / fix

  • Progress Software Progress® Telerik® Fiddler® Everywhere 8.3.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 d ago

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L

Affected products

  • Progress Software Progress® Telerik® Fiddler® Everywhere

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.