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CVE-2026-22796 is a type-confusion vulnerability in OpenSSL PKCS#7 signature verification. The legacy PKCS7_digest_from_attributes() function reads a message-digest attribute through an ASN1_TYPE union without first confirming that its type is V_ASN1_OCTET_STRING. A malformed signed PKCS#7 object can cause the function to interpret an incompatible union member as an octet string and dereference an invalid or NULL pointer. OpenSSL 3.6, 3.5, 3.4, 3.3, 3.0, 1.1.1, and 1.0.2 are affected. OpenSSL FIPS modules are not affected because PKCS#7 parsing is outside the FIPS module boundary.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
50 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability addressed by the EulerOS_SA-2026-3535 OpenSSL package update; no technical flaw details are provided.
A vulnerability referenced by the EulerOS security advisory; no technical vulnerability details are provided.
An OpenSSL vulnerability referenced by the NewStart CGSL advisory; no technical details are provided.
A vulnerability in OpenSSL addressed indirectly through upgraded third-party components in Tenable Security Center.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.