CVE Explorer

CVE-2026-6291

Bleichenbacher padding oracle in PKCS#7 KTRI decryption. When decrypting PKCS#7 EnvelopedData using RSA PKCS#1 v1.5 key transport, wolfSSL returned distinguishable error codes depending on whether RSA padding validation failed versus whether the decrypted content was malformed. An attacker able to submit crafted EnvelopedData messages and observe error responses could use this as a padding oracle to incrementally recover the encrypted Content Encryption Key (CEK). The fix generates a determinist

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:297e54d05b77dfbcdf72550202077fc4acd79fccc8450f89eacafe2d24e7ce1c

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":"3.9.10","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:96eee8c21ba204d5eb3cbb2bdc91ca618af9463269a6542700016bd6a28186b5 · sha256:2991fee7c7f9c282… · /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:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact"…

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:96eee8c21ba204d5eb3cbb2bdc91ca618af9463269a6542700016bd6a28186b5 · sha256:2991fee7c7f9c282… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-208","description":"CWE-208 Observable Timing Discrepancy","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:96eee8c21ba204d5eb3cbb2bdc91ca618af9463269a6542700016bd6a28186b5 · sha256:2991fee7c7f9c282… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"tags":["patch"],"url":"https://github.com/wolfSSL/wolfssl/pull/10203"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:96eee8c21ba204d5eb3cbb2bdc91ca618af9463269a6542700016bd6a28186b5 · sha256:2991fee7c7f9c282… · /containers/cna/references/0

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

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:96eee8c21ba204d5eb3cbb2bdc91ca618af9463269a6542700016bd6a28186b5 · sha256:2991fee7c7f9c282… · /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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