CVE-2026-74878

jahlives openssl_encrypt

Published 17 Aug 2026 · updated 1 Sept 2026 · Analyzed

9.3 Critical · CVSS 4.0, vulncheck.com

Description

openssl_encrypt versions before 1.4.0 use an in-memory rate limiter for TOTP brute-force protection that is not shared across workers and is lost on server restart. Attackers can distribute authentication attempts across multiple server instances or retry immediately after a restart to bypass rate limiting protections.

References

github.com/jahlives/openssl_encrypt/security/advisories/GHSA-h45m-mgcp-q388 · Mitigation, Vendor Advisory
www.vulncheck.com/advisories/openssl-encrypt-before-totp-rate-limiter-bypass · Third Party Advisory