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Vulnerability details: VCID-jnhf-93hz-byhe
Vulnerability ID VCID-jnhf-93hz-byhe
Aliases CVE-2021-33391
Summary An issue in HTACG HTML Tidy v5.7.28 allows attacker to execute arbitrary code via the -g option of the CleanNode() function in gdoc.c.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 0.0043 https://api.first.org/data/v1/epss?cve=CVE-2021-33391
cvssv3.1 9.8 https://github.com/htacg/tidy-html5/issues/946
ssvc Track* https://github.com/htacg/tidy-html5/issues/946
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-33391
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33391
1032665 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1032665
946 https://github.com/htacg/tidy-html5/issues/946
USN-6483-1 https://usn.ubuntu.com/6483-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/htacg/tidy-html5/issues/946
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:Y/T:T/P:M/B:A/M:M/D:R/2025-03-18T19:03:42Z/ Found at https://github.com/htacg/tidy-html5/issues/946
Exploit Prediction Scoring System (EPSS)
Percentile 0.62831
EPSS Score 0.0043
Published At May 29, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-05-29T13:45:11.864758+00:00 Debian Oval Importer Import https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.6.0