Description

Out-of-bounds read in ALPN parsing due to incomplete validation. wolfSSL 5.8.4 and earlier contained an out-of-bounds read in ALPN handling when built with ALPN enabled (HAVE_ALPN / --enable-alpn). A crafted ALPN protocol list could trigger an out-of-bounds read, leading to a potential process crash (denial of service). Note that ALPN is disabled by default, but is enabled for these 3rd party compatibility features: enable-apachehttpd, enable-bind, enable-curl, enable-haproxy, enable-hitch, enable-lighty, enable-jni, enable-nginx, enable-quic.

INFO

Published Date :

2026-03-19T20:20:42.608Z

Last Modified :

2026-03-19T20:20:42.608Z

Source :

wolfSSL
AFFECTED PRODUCTS

The following products are affected by CVE-2026-3547 vulnerability.

Vendors Products
Wolfssl
  • Wolfssl
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-3547.

URL Resource
https://github.com/wolfSSL/wolfssl/pull/9859 cve-icon cve-icon
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