GHSA-f89h-2fjh-2r9q · Severity: high · Ecosystem: rust — gix-fs: Symlink prefix-reuse allows worktree escape during checkout
gitoxide is an implementation of git written in Rust. Prior to 0.21.1, a malicious tree can be constructed that will, when checked out with gitoxide, permit writing an attacker-controlled symlink into any existing directory the user has write access to. During checkout, all symlink index entries are deferred and created after regular files using a single shared gix_worktree::Stack. Internally, this uses a gix_fs::Stack. gix_fs::Stack::make_relative_path_current() caches validated path prefixes: when the previously-processed leaf component exactly matches the leading component(s) of the next path, the leaf-to-directory transition at gix-fs/src/stack.rs invokes only delegate.push_directory(), never delegate.push(). In gix_worktree::stack::delegate::StackDelegate, when the state member is State::CreateDirectoryAndAttributesStack, Attributes::push_directory() only loads attributes (from the ODB, in the clone case), and does not perform any other checks. The on-disk symlink_metadata() check and unlink-on-collision live in StackDelegate::push()'s invocation of create_leading_directory(), which is therefore bypassed for the cached prefix. The final symlink is created with plain std::os::unix::fs::symlink, which follows symlinks in parent directories. Therefore, it's possible to provide a tree with duplicate symlink and directory entries that exploits this. This vulnerability is fixed in 0.21.1.
Conclusion & alert: CVE-2026-44471 is rated Exploit Available (50/100): CVSS High severity, with low exploitation likelihood (EPSS 0.01%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-14 | — | 0.01% | — |
Full EPSS history (1 record total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
GHSA-f89h-2fjh-2r9q · Severity: high · Ecosystem: rust — gix-fs: Symlink prefix-reuse allows worktree escape during checkout
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2026-44471 not yet assigned priority: Debian including 1 source packages (rust-gix-fs), 3 status rows across 3 suites (forky, sid, trixie): resolved 2, open 1. | https://security-tracker.debian.org/tracker/CVE-2026-44471 |
ubuntu
|
medium | CVE-2026-44471 medium priority: Ubuntu including 1 source packages (rust-gix-fs), 5 status rows across 5 suites (jammy, noble, questing, resolute, upstream): needs-triage 3, DNE 1, released 1. | https://ubuntu.com/security/CVE-2026-44471 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| gitoxidelabs | gix-fs | < 0.21.1 | cpe:2.3:a:gitoxidelabs:gix-fs:*:*:*:*:*:rust:*:* |
| URL | Tags |
|---|---|
| https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-f89h-2fjh-2r9q | Exploit Vendor Advisory |