Highlights
Information Disclosure: 2 prior fixes. Scrutinize any change in this area.
mcp_proxy_for_aws/sigv4_helper.py: most-fixed (3 issues). Treat as high-risk during review.
2 high-severity fixes in this history; regressions here are high-impact.
Recurring patterns
The bug types that recur here, drawn from past fixes, not open vulnerabilities.
Information Disclosure: Two separate fixes were needed to stop AWS access key leakage in debug logs, indicating an ongoing risk of credential exposure via logging.
SSRF: The SigV4 client followed redirects, which could forward signed requests to attacker-controlled hosts, enabling SSRF with valid AWS credentials.
Cleartext Transmission of Sensitive Information: Remote endpoint connections were not enforced to use HTTPS, risking interception of SigV4 credentials over cleartext HTTP.