CVE-2026-73829 Non-atomic hash-credential dedup in mpp Tempo allows replay of a confirmed payment under a concurrent race

Time-of-check Time-of-use TOCTOU Race Condition in ZenHive mpp allows an unauthenticated remote client to redeem one confirmed on-chain payment for multiple paid-resource accesses. The type="hash" credential path in MPP.Methods.Tempo.verify/2 guards against replay with a non-atomic check-then-mar...

CVE-2026-73829

ZenHive mpp (Elixir MPP library) versions 0.2.0 through 0.6.0 contain a TOCTOU race condition in the type="hash" credential path of MPP.Methods.Tempo.verify/2. The dedup check-then-mark sequence is non-atomic: check_hash_unused/2 reads the store, an on-chain receipt is verified, and only then doe...

GHSA-HWRC-W5GG-F335 TYPO3 Install Tool Subcomponent Allows Access Using Only a Password's MD5 Hash as a Credential

The Install Tool subcomponent in TYPO3 4.0.13 and earlier, 4.1.x before 4.1.13, 4.2.x before 4.2.10, and 4.3.x before 4.3beta2 allows remote attackers to gain access by using only the password's md5 hash as a credential...