What’s Vulnerable › Vulnerabilities

CVE-2021-23191

• Severity: high (CVSS 7.8 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: 2022-03-02 · updated 2026-06-17
• Weakness: CWE-476

Description

A security issue was found in htmldoc v1.9.12 and before. A NULL pointer dereference in the function image_load_jpeg() in image.cxx may result in denial of service.

Affected products

• htmldoc: through 1.9.12

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1967022
• https://github.com/michaelrsweet/htmldoc/commit/369b2ea1fd0d0537ba707f20a2f047b6afd2fbdc
• https://github.com/michaelrsweet/htmldoc/issues/415
• https://ubuntu.com/security/CVE-2021-23191
• https://bugzilla.redhat.com/show_bug.cgi?id=1967022
• https://github.com/michaelrsweet/htmldoc/commit/369b2ea1fd0d0537ba707f20a2f047b6afd2fbdc
• https://github.com/michaelrsweet/htmldoc/issues/415
• https://ubuntu.com/security/CVE-2021-23191

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