GHSA-HG88-V3CW-3QRH Sparkle: Binary delta apply intermediate-symlink traversal in malicious .delta

Summary Binary delta apply intermediate-symlink traversal in malicious .delta Autoupdate/SUBinaryDeltaApply.m enforces relativePath.pathComponents containsObject:@".." and rejects writes whose immediate parent directory IS itself a symbolic link, but does not detect symlinks deeper in the relativ...