CVE-2021-44543: privoxy Cross-site Scripting
CVSS: 6.1v3.1MediumModified
AliasesALPINE-CVE-2021-44543UBUNTU-CVE-2021-44543DEBIAN-CVE-2021-44543
Published 23-12-2021Last modified 04-08-2024
Vulnerability summary
CVE-2021-44543 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in privoxy. EPSS estimates a 0.80% chance of exploitation in the next 30 days, higher than 55.6% of scored vulnerabilities.
CVSS score
6.1/10
010
Medium · v3.1 (NVD)EPSS score
0.80%
0%100%
Low · +0.03 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 6 · Related 4Timeline
- 23-12-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
5 scores · 4 sources · 2 versionsMedium 6.1Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NSourcesAll 4 agree
- OSV · AlpineEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- OSV · UbuntuEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- OSV · DebianEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Low 2.6Preferred score · NVD (NIST)
AV:N/AC:H/Au:N/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
0.80%
Chance of exploitation in the next 30 days
Percentile
56%
Versus all other CVEs
30-day change
+0.03 pp
From 0.77% on 19-09-2026
19-09-202619-10-2026
EPSS score0.80%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Alpine1 product
- privoxy< 3.0.33-r0
Debian1 product
- privoxy< 3.0.33-1
Privoxy1 product
- privoxy< 3.0.33
Ubuntu1 product
- privoxyAll versions (No fix recorded) | < 3.0.26-5ubuntu0.3 | < 3.0.28-2ubuntu0.2
4 vendors · 4 products
References
9 links- www.privoxy.org/3.0.33/user-manual/whatsnew.html%2CX Refsource MISC
- www.privoxy.org/gitweb/?p=privoxy.git%3Ba=commit%3Bh=0e668e9409cX Refsource MISC
