6.1

CVE-2021-35043: antisamy_project antisamy Cross-site Scripting

CVSS: 6.1v3.1MediumModified
AliasesUBUNTU-CVE-2021-35043DEBIAN-CVE-2021-35043GHSA-9c8w-jrw3-q2c3
Published 19-07-2021Last modified 04-08-2024

Vulnerability summary

CVE-2021-35043 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in antisamy_project antisamy. EPSS estimates a 1.51% chance of exploitation in the next 30 days, higher than 74% of scored vulnerabilities.

Overall risk
25/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (NVD)
EPSS score
1.51%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 19-07-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

OWASP AntiSamy before 1.6.4 allows XSS via HTML attributes when using the HTML output serializer (XHTML is not affected). This was demonstrated by a javascript: URL with &#00058 as the replacement for the : character.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

1.51%

Chance of exploitation in the next 30 days

Percentile

74%

Versus all other CVEs

30-day change

0.00 pp

From 1.51% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.51%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Oracle9 products
Antisamy_project1 product
Debian1 product
  • libowasp-antisamy-javaAll versions (No fix recorded) | < 1.7.4-1
Netapp1 product
Org.owasp.antisamy1 product
  • antisamy≥ 1.5.7, < 1.6.4
Ubuntu1 product
  • libowasp-antisamy-javaAll versions (No fix recorded)

6 vendors · 14 products

References

11 links
Show all 11 references