GitPython: Incomplete unsafe_git_revision_options denylist omits --contents/-S, enabling arbitrary file read via Repo.blame()

Summary Repo.blame / Repo.blameincremental guard forwarded revision options against unsafegitrevisionoptions, but that denylist only contains the file-WRITE options --output/-o. git blame also honors --contents and -S , which cause the file's lines to be echoed into the blame result — an arbitrar...

CVE-2026-78678 GitPython before 3.1.59 Arbitrary File Read via Repo.blame()

GitPython versions before 3.1.59 contain an incomplete denylist in the unsafegitrevisionoptions guard that omits --contents and -S options, allowing attackers to read arbitrary files by passing these options to Repo.blame. Attackers can supply revision values like --contents=/etc/passwd to leak...