CVE-2026-3229
wolfSSL vulnerability analysis and mitigation

An integer overflow vulnerability existed in the static function wolfssl_add_to_chain, that caused heap corruption when certificate data was written out of bounds of an insufficiently sized certificate buffer. wolfssl_add_to_chain is called by these API: wolfSSL_CTX_add_extra_chain_cert, wolfSSL_CTX_add1_chain_cert, wolfSSL_add0_chain_cert. These API are enabled for 3rd party compatibility features: enable-opensslall, enable-opensslextra, enable-lighty, enable-stunnel, enable-nginx, enable-haproxy. This issue is not remotely exploitable, and would require that the application context loading certificates is compromised.


SourceNVD

Related wolfSSL vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-5500HIGH8.7
  • wolfSSLwolfSSL
  • wolfssl
NoNoApr 10, 2026
CVE-2026-5501HIGH8.6
  • wolfSSLwolfSSL
  • wolfssl
NoNoApr 10, 2026
CVE-2026-5477HIGH8.2
  • wolfSSLwolfSSL
  • wolfssl
NoNoApr 10, 2026
CVE-2026-5479HIGH7.6
  • wolfSSLwolfSSL
  • wolfssl
NoYesApr 10, 2026
CVE-2026-5466HIGH7.6
  • wolfSSLwolfSSL
  • cpe:2.3:a:wolfssl:wolfssl
NoYesApr 10, 2026

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