What’s Vulnerable › Vulnerabilities

CVE-2021-33391

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-02-17 · updated 2026-06-17
• Weakness: CWE-416

Description

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.

Affected products

• HTACG tidy-html5: 5.7.28

References

• https://github.com/htacg/tidy-html5/issues/946
• https://github.com/htacg/tidy-html5/issues/946

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