Cross-site Scripting in Strapi

published 2020-10-22 6y ago modified 2026-06-17 4mo ago also GHSA-qvp5-mm7v-4f36 , EUVD-2020-1436

cvss: 5.4; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits: 0; none known

Strapi before 3.2.5 has stored XSS in the wysiwyg editor's preview feature.

Patch / fix

fixed in 2 links 2

npm strapi-plugin-content-manager 3.2.5
strapi strapi 3.2.5

github.com/strapi/strapi#8440 pull request
github.com/strapi/strapi/releases/tag/v3.2.5 release

Is CVE-2020-27666 in your dependencies? 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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Exploit prediction

0.72% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N
GitHub	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
npm	strapi-plugin-content-manager	<3.2.5	3.2.5

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /strapi/strapi/pull/8440
web, patch, third-party-advisory
github.com /strapi/strapi/releases/tag/v3.2.5
web, release-notes, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2020-27666
advisory

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.