Skip to content
Fencer Intel
medium 6.4

CVE-2026-104719 json

CookieYes < 3.5.8 - Contributor+ Stored XSS via Cookie Category Scripts

published 5d ago modified 5d ago also EUVD-2026-116760

cvss
6.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits
0
none known

Summary

The CookieYes WordPress plugin before 3.5.8 does not correctly restrict who can write its cookie-category script fields, and does not sanitize or escape them, allowing users with the Contributor role to store JavaScript that executes in the browsers of site visitors and of an administrator reviewing the content.

Patch / fix

  • Unknown CookieYes 3.5.8

Is CVE-2026-104719 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.

Check with Fencer

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
5d ago

Exploit prediction

0.31% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • wpscan.com https://wpscan.com/vulnerability/fd1e087e-99b2-4942-82ee-44160ad77151/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.4 CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 6.4 CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H

Affected products

  • Unknown CookieYes

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.