MEDIUM

CVE-2026-6091

Wolfssl Wolfssl 2026-06-25 CVSS v3.1

CVSS

6.5

Description

Partial-chain certificate verification may accept chains that terminate at a peer-supplied, untrusted intermediate certificate rather than a trusted anchor. An attacker could present a chain that ends at an intermediate they control and have it accepted as valid. This affects the OpenSSL compatibility certificate-path-building path (wolfSSL_X509_verify_cert / X509_STORE, OPENSSL_EXTRA) when the X509_V_FLAG_PARTIAL_CHAIN verify flag is enabled.

Weakness (CWE)

CWE-295 Improper Certificate Validation

EPSS Score

0.2%

Probability of exploitation in next 30 days

9.5th percentile

References

https://github.com/wolfSSL/wolfssl/pull/10170 Issue Tracking, Patch https://www.wolfssl.com/docs/security-vulnerabilities/ Vendor Advisory

View on dbcve.org

Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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