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Fencer Vulns
medium 6.1

CVE-2019-1010091 json

XSS in TinyMCE

published 2019-07-17 7 y ago modified 2026-06-17 4 mo ago also GHSA-c78w-2gw7-gjv3 , EUVD-2020-0418

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known

Summary

tinymce 4.7.11, 4.7.12 is affected by: CWE-79: Improper Neutralization of Input During Web Page Generation. The impact is: JavaScript code execution. The component is: Media element. The attack vector is: The victim must paste malicious content to media element's embed tab.

Patch / fix

  • npm tinymce 4.9.10, 5.2.2
  • tiny tinymce 4.9.10, 5.2.2

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-1010091 updated cvss 6.3

tinymce: cross site scripting in media element

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.92% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/tinymce/tinymce/issues/4394 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected packages

ecosystem package affected fixed in
npm tinymce
<4.9.10
>=5.0.0, <5.2.2
4.9.10
5.2.2

Affected products

  • tinymce tinymce

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.