# justhtml (PyPI) vulnerabilities

10 known vulnerabilities (3 critical, 2 high, 5 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: 3.16.0 (Oct 26, 2026): no advisory affects it
- Newest unaffected release: 3.16.0 (Oct 26, 2026), the latest release
- Weekly downloads: 71.7K
- Dependents: 16
- Releases: 97 since 0.1.0 (Nov 30, 2025)
- Registry: https://pypi.org/project/justhtml/
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-9769: 0.1.0 to 1.9.1 (1.10.0 is outside it)
- CVE-2026-8630: 0.1.0 to 1.11.0 (1.12.0 is outside it)
- CVE-2026-8445: 0.1.0 to 1.11.0 (1.12.0 is outside it)
- CVE-2026-7808: 0.1.0 to 1.15.0 (1.16.0 is outside it)
- CVE-2026-77088: 0.9.0 to 1.21.0 (1.22.0 is outside it)
- CVE-2026-6827: 0.1.0 to 1.16.0 (1.17.0 is outside it)
- CVE-2026-5751: 1.13.0 (1.14.0 is outside it)
- CVE-2026-5389: 0.1.0 to 1.12.0 (1.13.0 is outside it)
- CVE-2026-5388: 0.1.0 to 1.14.0 (1.15.0 is outside it)
- CVE-2026-4671: 0.1.0 to 1.17.0 (1.18.0 is outside it)

## Advisories (10)

### [CVE-2026-9769](https://cve.now/CVE-2026-9769): justhtml before 1.10.0 Denial of Service via deeply nested HTML

- Severity: High 8.7
- Published: Aug 23, 2026
- Affected: fixed in 1.10.0.
- Fixed in 1.10.0 (released Mar 15, 2026, 161 days before disclosure).
- The latest release, 3.16.0, is not affected.

### [CVE-2026-8630](https://cve.now/CVE-2026-8630): justhtml before 1.12.0 Mutation XSS via Raw Text Elements

- Severity: Medium 5.1
- Published: Aug 23, 2026
- Affected: fixed in 1.12.0.
- Fixed in 1.12.0 (released Mar 17, 2026, 159 days before disclosure).
- The latest release, 3.16.0, is not affected.

### [CVE-2026-8445](https://cve.now/CVE-2026-8445): justhtml before 1.12.0 Sanitizer Bypass via Markdown

- Severity: Critical 9.3
- Published: Aug 23, 2026
- Affected: fixed in 1.12.0.
- Fixed in 1.12.0 (released Mar 17, 2026, 159 days before disclosure).
- The latest release, 3.16.0, is not affected.

### [CVE-2026-7808](https://cve.now/CVE-2026-7808): justhtml before 1.16.0 Multiple Security Issues via Sanitization

- Severity: Critical 9.3
- Published: Aug 23, 2026
- Affected: fixed in 1.16.0.
- Fixed in 1.16.0 (released Apr 12, 2026, 133 days before disclosure).
- The latest release, 3.16.0, is not affected.

### [CVE-2026-77088](https://cve.now/CVE-2026-77088): justhtml 0.9.0 through 1.21.0 Cross-Site Scripting via code-span

- Severity: Medium 5.3
- Published: Aug 23, 2026
- Affected: from 0.9.0, fixed in 1.22.0.
- Fixed in 1.22.0 (released May 22, 2026, 93 days before disclosure).
- The latest release, 3.16.0, is not affected.

### [CVE-2026-6827](https://cve.now/CVE-2026-6827): justhtml before 1.17.0 Multiple Cross-Site Scripting Vulnerabilities

- Severity: Medium 5.1
- Published: Aug 23, 2026
- Affected: fixed in 1.17.0.
- Fixed in 1.17.0 (released Apr 19, 2026, 126 days before disclosure).
- The latest release, 3.16.0, is not affected.

### [CVE-2026-5751](https://cve.now/CVE-2026-5751): justhtml before 1.14.0 Mutation XSS via custom sanitization policies

- Severity: Medium 5.1
- Published: Aug 23, 2026
- Affected: from 1.13.0, fixed in 1.14.0.
- Fixed in 1.14.0 (released Apr 5, 2026, 140 days before disclosure).
- The latest release, 3.16.0, is not affected.

### [CVE-2026-5389](https://cve.now/CVE-2026-5389): justhtml before 1.13.0 XSS via code fence breakout

- Severity: Medium 5.1
- Published: Aug 23, 2026
- Affected: fixed in 1.13.0.
- Fixed in 1.13.0 (released Mar 21, 2026, 155 days before disclosure).
- The latest release, 3.16.0, is not affected.

### [CVE-2026-5388](https://cve.now/CVE-2026-5388): justhtml before 1.15.0 Multiple Security Issues

- Severity: Critical 9.3
- Published: Aug 23, 2026
- Affected: fixed in 1.15.0.
- Fixed in 1.15.0 (released Apr 9, 2026, 136 days before disclosure).
- The latest release, 3.16.0, is not affected.

### [CVE-2026-4671](https://cve.now/CVE-2026-4671): justhtml before 1.18.0 Denial of Service via CSS Selector

- Severity: High 8.7
- Published: Aug 23, 2026
- Affected: fixed in 1.18.0.
- Fixed in 1.18.0 (released May 4, 2026, 111 days before disclosure).
- The latest release, 3.16.0, is not affected.

---

Source: cve.now
Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards.
Page: https://cve.now/packages/pypi/justhtml
Site guide for agents: https://cve.now/llms.txt
Uses NVD data; not endorsed by NVD.