DEBIAN-CVE-2026-11310

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Source

https://security-tracker.debian.org/tracker/CVE-2026-11310

Import Source

https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-11310.json

JSON Data

https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-11310

Upstream

CVE-2026-11310

Published

2026-06-25T20:17:09Z

Modified

2026-09-14T17:01:33Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator

Summary

[none]

Details

X.509 trust-chain bypass in the OpenSSL compatibility certificate verifier (wolfSSL_X509_verify_cert()). This affects only builds with --enable-opensslextra (OPENSSL_EXTRA) and whose application validates certificates by calling X509_verify_cert() with caller-supplied untrusted intermediate certificates; for those users it is critical, otherwise the library is unaffected. In particular, native wolfSSL TLS/DTLS usage is not impacted. wolfSSL's X509_verify_cert() temporarily loads each caller-supplied untrusted intermediate into the certificate manager but failed to drop them before the trusted-store check, so an untrusted intermediate could anchor the path itself. An attacker can present a chain that never reaches a configured trust anchor and have it accepted, resulting in acceptance of an attacker-controlled certificate. This is certificate verification independent of TLS (e.g. S/MIME/CMS, code/firmware signing, JWT/JWS x5c), is not specific to any key type or algorithm, and a single untrusted intermediate suffices. The default wolfSSL TLS handshake (WOLFSSL_VERIFY_PEER) is not affected; only TLS applications doing manual or deferred peer verification through this API are, which also requires --enable-sessioncerts.

References

https://security-tracker.debian.org/tracker/CVE-2026-11310

Affected packages

Debian:12 / wolfssl

Package

Name: wolfssl
Purl: pkg:deb/debian/wolfssl?arch=source&distro=bookworm

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.5.4-2

5.5.4-2+deb12u1

5.5.4-2+deb12u2

5.5.4-2+deb12u3

5.5.4-2.1

5.6.4-1

5.6.4-2

5.6.6-1

5.6.6-1.1

5.6.6-1.2

5.6.6-1.3~exp1

5.6.6-1.3

5.7.0-0.1

5.7.0-0.2

5.7.0-0.3

5.7.2-0.1

5.7.2-0.2

5.7.2-0.3

5.7.2-0.4

5.8.2-1

5.8.2-1.1

5.8.2-1.2

5.8.4-1

5.9.0-0.1

5.9.0-0.2

5.9.1-0.1

5.9.2-1

Ecosystem specific

{
    "urgency": "end-of-life"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-11310.json"

Debian:13 / wolfssl