Description

ccoap 77f55c4b466e99327c24ace8a2913d3ba7e2ccd5 contains a vulnerability in the option parsing logic that causes a segmentation fault when processing malformed COAP messages with insufficient option data.

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References

Other References

https://github.com/ipflavors/ccoap https://github.com/songxpu/bug_report/blob/master/CoAP/ccoap/VULNERABILITY_REPORT1.md

Frequently Asked Questions

What is CVE-2026-26459? +

ccoap 77f55c4b466e99327c24ace8a2913d3ba7e2ccd5 contains a vulnerability in the option parsing logic that causes a segmentation fault when processing malformed COAP messages with insufficient option data.

How do I check if I'm vulnerable to CVE-2026-26459? +

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.