CVE Explorer

CVE-2026-6091

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.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d21c95701afd830c99b4d86b9e24961a807ea5ddf4353b80c592a2fda1431c50

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"collectionURL":"https://github.com/wolfSSL/wolfssl","defaultStatus":"unaffected","product":"wolfSSL","vendor":"wolfSSL","versions":[{"lessThanOrEqual":"5.9.1","status":"affected","version":"5.7.4","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:ba76a28d3697ab4d1418b784175bf2840940fefda66528ef34b975ead8710ff5 · sha256:9ab29e4034745cdf… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact"…

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:ba76a28d3697ab4d1418b784175bf2840940fefda66528ef34b975ead8710ff5 · sha256:9ab29e4034745cdf… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-295","description":"CWE-295 Improper Certificate Validation","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:ba76a28d3697ab4d1418b784175bf2840940fefda66528ef34b975ead8710ff5 · sha256:9ab29e4034745cdf… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"tags":["patch"],"url":"https://github.com/wolfSSL/wolfssl/pull/10170"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:ba76a28d3697ab4d1418b784175bf2840940fefda66528ef34b975ead8710ff5 · sha256:9ab29e4034745cdf… · /containers/cna/references/0

{"url":"https://www.wolfssl.com/docs/security-vulnerabilities/"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:ba76a28d3697ab4d1418b784175bf2840940fefda66528ef34b975ead8710ff5 · sha256:9ab29e4034745cdf… · /containers/cna/references/1

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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