XSS in Privoxy

CVE-2021-44543

An XSS vulnerability was found in Privoxy which was fixed in cgi_error_no_template() by encode the template name when Privoxy is configured to servce the user-manual itself.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.8th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-44543: held from 0.008 to 0.008.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: -0.000

Affected products

  • Privoxy
  • Privoxy — versions Privoxy 3.0.33

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-44543?
CVE-2021-44543 is a medium-severity vulnerability in Privoxy, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-12-23.
How severe is CVE-2021-44543?
Medium severity. CVSS v3 base score is 6.1 out of 10.