Integer overflow in htmldoc
Priority MEDIUM 47CWE-190Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.
Summary
Integer overflow in the htmldoc 1.9.11 and before may allow attackers to execute arbitrary code and cause a denial of service that is similar to CVE-2017-9181.
Why it matters now
EPSS 0.02477 84th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | htmldoc | htmldoc 1.9.11 and older | — | No fix listed | CNA |
- htmldoc Vendor— Affected htmldoc 1.9.11 and older Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:htmldoc_project:htmldoc:*:*:*:*:*:*:*:* | up to 1.9.11 | Vulnerable | Htmldoc Project |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
- cpe:2.3:a:htmldoc_project:htmldoc:*:*:*:*:*:*:*:* Versions up to 1.9.11 Vulnerable ·Htmldoc Project
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2021-20308
- 2026-10-03 Alias added: GHSA-pmv7-7c58-mhrx
References
Sources
- CVE-2021-20308 · CVE Program
- CVE-2021-20308 · NVD
- FIRST EPSS
- GHSA-pmv7-7c58-mhrx · GitHub Advisory Database · CC BY 4.0
- CVE-2021-20308 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences