Cross-site Scripting in OWASP AntiSamy

published 2022-04-21 4 y ago modified 2026-10-08 31 d ago also GHSA-vp37-2f9p-3vr3 , EUVD-2022-1842

cvss: 6.1; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.3%; EPSS 1.3% chance of exploitation in 30 days, percentile 71%
public exploits: 0; none known

OWASP AntiSamy before 1.6.7 allows XSS via HTML tag smuggling on STYLE content with crafted input. The output serializer does not properly encode the supposed Cascading Style Sheets (CSS) content. NOTE: this issue exists because of an incomplete fix for CVE-2022-28367.

Patch / fix

fixed in 2 links 3

maven org.owasp.antisamy:antisamy 1.6.7
antisamy_project antisamy 1.6.7

github.com/nahsra/antisamy@32e2735 commit
github.com/nahsra/antisamy/releases/tag/v1.6.7 release
oracle.com/security-alerts/cpujul2022.html advisory

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 31 d ago (2026-10-08)

Exploit prediction

1.33% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).

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
GitHub	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
maven	org.owasp.antisamy:antisamy	<1.6.7	1.6.7

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /nahsra/antisamy/commit/32e273507da0e964b58c50fd8a4c94c9d9363af0
web, patch
oracle.com /security-alerts/cpujul2022.html
web, patch, third-party-advisory
github.com /nahsra/antisamy/releases/tag/v1.6.7
web, release-notes
nvd.nist.gov /vuln/detail/CVE-2022-29577
advisory
github.com /nahsra/antisamy
package

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.

Summary