CVE-2026-72703

A flaw was found in Rocq Prover. The guard checker incorrectly processes parameters of nested mutual fixpoints when cross-calls occur between different bodies of the fixpoint. This oversight allows the system to accept non-terminating definitions as structurally decreasing. This critical logical...

PT-2026-25402

Lean 4 VS Code Extension is a Visual Studio Code extension for the Lean 4 proof assistant. Projects that use @leanprover/unicode-input-component are vulnerable to an XSS exploit in 0.1.9 of the package and lower. The component re-inserted text in the input element back into the input element as...

Proof that HMAC-DRBG has No Back Doors

New research: "Verified Correctness and Security of mbedTLS HMAC-DRBG," by Katherine Q. Ye, Matthew Green, Naphat Sanguansin, Lennart Beringer, Adam Petcher, and Andrew W. Appel. Abstract: We have formalized the functional specification of HMAC-DRBG NIST 800-90A, and we have proved its...