{"id":"JLSEC-2026-719","details":"A stack buffer overflow exists in wolfSSL's PKCS7 implementation in the `wc_PKCS7_DecryptOri()` function in `wolfcrypt/src/pkcs7.c`. When processing a CMS EnvelopedData message containing an OtherRecipientInfo (ORI) recipient, the function copies an ASN.1-parsed OID into a fixed 32-byte stack buffer (oriOID[`MAX_OID_SZ`]) via XMEMCPY without first validating that the parsed OID length does not exceed `MAX_OID_SZ`. A crafted CMS EnvelopedData message with an ORI recipient containing an OID longer than 32 bytes triggers a stack buffer overflow. Exploitation requires the library to be built with --enable-pkcs7 (disabled by default) and the application to have registered an ORI decrypt callback via `wc_PKCS7_SetOriDecryptCb()`.","modified":"2026-07-25T18:24:00.504797317Z","published":"2026-07-14T21:41:35.775Z","upstream":["CVE-2026-5295","EUVD-2026-21228"],"database_specific":{"license":"CC-BY-4.0","sources":[{"html_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5295","database_specific":{"status":"Analyzed"},"id":"CVE-2026-5295","imported":"2026-07-17T22:30:19.661Z","modified":"2026-06-17T10:58:46.407Z","published":"2026-04-09T23:17:01.093Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-5295"},{"published":"2026-04-09T22:53:10Z","url":"https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-21228","html_url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-21228","id":"EUVD-2026-21228","imported":"2026-07-17T22:30:29.705Z","modified":"2026-04-14T14:32:57Z"}]},"references":[{"type":"WEB","url":"https://github.com/wolfSSL/wolfssl/pull/10116"}],"affected":[{"package":{"name":"wolfSSL_jll","ecosystem":"Julia","purl":"pkg:julia/wolfSSL_jll?uuid=98c43586-9870-5ae5-ab22-acc77b9bbdb5"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"5.9.2+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-719.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}