cryptography: PKCS#7 EnvelopedData decryption exposes a Bleichenbacher oracle through distinguishable errors and timing
High-risk advisory
CVE-2026-69247
Summary
cryptography: PKCS#7 EnvelopedData decryption exposes a Bleichenbacher oracle through distinguishable errors and timing
Why it matters
GitHub has published a reviewed security advisory for cryptography. Prioritize it with other application dependency updates.
Operator check
Check whether cryptography is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 8.2.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.