漏洞标题: Improper Digest Verification in httpsig-hyper May Allow Message Integrity Bypass 漏洞严重性: High (7.5/10) 漏洞影响范围: Package: httpsig-hyper (Rust) Affected versions: = 0.0.23 问题描述: An issue was discovered in httpsig-hyper where Digest header verification could incorrectly succeed due to misuse of Rust's macro. Specifically, the comparison: treated as a pattern binding rather than a value comparison, resulting in unconditional success of the match expression. 问题影响: As a consequence, digest verification could incorrectly return success even when the computed digest did not match the expected value. Applications relying on Digest verification as part of HTTP message signature validation may therefore fail to detect message body modification. 漏洞修复: This issue has been fixed in: - httpsig-hyper >= 0.0.23 The fix replaces the incorrect usage with proper value comparison and additionally introduces constant-time comparison for digest verification. 临时解决方法: There is no reliable workaround without upgrading. Users who cannot immediately upgrade should avoid relying solely on Digest verification for message integrity and ensure that full HTTP message signature verification is enforced at the application layer.