CVE-2026-88807

Published Sep 21, 2026 Modified Sep 21, 2026 CWE-122

Description

A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.

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Weakness Type (CWE)

CWE-122 CWE-122

References

Other References

https://gitlab.freedesktop.org/xorg/lib/libxrender/-/merge_requests/19

Frequently Asked Questions

What is CVE-2026-88807? +

A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.

How do I check if I'm vulnerable to CVE-2026-88807? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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