PYSEC-2026-3659 compliance-trestle has an URLSecurityValidator SSRF allowlist bypass via IPv4-mapped IPv6 and 0.0.0.0

Summary compliance-trestle 4.0.3 latest ships an URLSecurityValidator in trestle/core/remote/security.py to block SSRF to loopback / link-local / cloud-metadata endpoints from the HTTPSFetcher and SFTPFetcher remote-fetch paths. The allowlist is incomplete and can be bypassed by four equivalent...

compliance-trestle has an URLSecurityValidator SSRF allowlist bypass via IPv4-mapped IPv6 and 0.0.0.0

Summarycompliance-trestle 4.0.3 latest ships an URLSecurityValidator in trestle/core/remote/security.py to block SSRF to loopback / link-local / cloud-metadata endpoints from the HTTPSFetcher and SFTPFetcher remote-fetch paths. The allowlist is incomplete and can be bypassed by four equivalent...

CVE-2026-45725

A flaw was found in compliance-trestle. The library's remote fetching cache mechanism HTTPSFetcher and SFTPFetcher does not properly sanitize path traversal sequences ../ when constructing local cache file paths from URLs. A remote attacker can exploit this by referencing a malicious URL in an...

CVE-2026-45725

compliance-trestle is a tooling platform for managing compliance as code. Prior to versiions 3.12.2 and 4.0.3, the compliance-trestle library's remote fetching cache mechanism HTTPSFetcher and SFTPFetcher constructs the local cache file path from the URL path component without sanitizing path...

CVE-2026-45725 compliance-trestle Remote Fetching Mechanism has an Arbitrary File Write via Cache Path Traversal

compliance-trestle is a tooling platform for managing compliance as code. Prior to versiions 3.12.2 and 4.0.3, the compliance-trestle library's remote fetching cache mechanism HTTPSFetcher and SFTPFetcher constructs the local cache file path from the URL path component without sanitizing path...

CVE-2026-45725 compliance-trestle Remote Fetching Mechanism has an Arbitrary File Write via Cache Path Traversal

compliance-trestle is a tooling platform for managing compliance as code. Prior to versiions 3.12.2 and 4.0.3, the compliance-trestle library's remote fetching cache mechanism HTTPSFetcher and SFTPFetcher constructs the local cache file path from the URL path component without sanitizing path...

CVE-2026-45725

CVE-2026-45725 affects compliance-trestle: the remote fetching cache (HTTPSFetcher and SFTPFetcher) constructs local cache paths from URL path components without sanitizing path traversal sequences ("../"). This can cause the HTTP response body to be written to a location outside the intended cac...

CVE-2026-45725

compliance-trestle is a tooling platform for managing compliance as code. Prior to versiions 3.12.2 and 4.0.3, the compliance-trestle library's remote fetching cache mechanism HTTPSFetcher and SFTPFetcher constructs the local cache file path from the URL path component without sanitizing path...