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Fencer Intel
medium 6.8

CVE-2026-104676 json

Zion Builder <= 3.6.17 - Author+ Stored XSS via SVG Upload

published 2d ago modified 22h ago also EUVD-2026-120811

cvss
6.8
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 5%
public exploits
0
none known

Summary

The Zion Builder WordPress plugin through 3.6.17 does not sanitize uploaded SVG files or validate their contents before storing them in a publicly accessible location and serving them from the site's own origin, allowing authenticated users with the Author role or above to upload a crafted SVG containing JavaScript that executes in the browser of anyone who opens the file.

Is CVE-2026-104676 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
23h ago

Exploit prediction

0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

  • wpscan.com https://wpscan.com/vulnerability/c7f45006-a654-4d3f-83b0-727e468f487e/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 6.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

Affected products

  • Unknown Zion Builder

Classification

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

References

Sources

Fencer Intel 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.