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CVE-2026-55962

TLS 1.3 post-handshake authentication (PHA) issue where a server could accept a client's Finished message without the client having sent a Certificate and CertificateVerify. The post-handshake-auth exemption that allows an empty/absent peer certificate was only intended for the initial handshake, but it was also being applied while a post-handshake CertificateRequest was still outstanding. The check is now scoped to the initial handshake only: on the server, once a post-handshake CertificateRequ
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d7c141c246d4f8ebc01a459423a39a51ebe3ec48670911ec274b1971726df114
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

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":"5.5.4","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:44775101389b71b3f6e9315a8a6cfe851e65f1d798ee89822120156b7ca7fd7f · sha256:430fda5361e12368… · /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:v2:44775101389b71b3f6e9315a8a6cfe851e65f1d798ee89822120156b7ca7fd7f · sha256:430fda5361e12368… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-287","description":"CWE-287 Improper Authentication","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:44775101389b71b3f6e9315a8a6cfe851e65f1d798ee89822120156b7ca7fd7f · sha256:430fda5361e12368… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["patch"],"url":"https://github.com/wolfSSL/wolfssl/pull/10702"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:44775101389b71b3f6e9315a8a6cfe851e65f1d798ee89822120156b7ca7fd7f · sha256:430fda5361e12368… · /containers/cna/references/0
{"url":"https://www.wolfssl.com/docs/security-vulnerabilities/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:44775101389b71b3f6e9315a8a6cfe851e65f1d798ee89822120156b7ca7fd7f · sha256:430fda5361e12368… · /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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