CVE-2026-75913: CodeWhale argument injection in git_show tool

CVE-2026-75913 · Severity: critical · CVSS 9.3 · Published 2026-08-18

DeepSeek-TUI's git_show tool fails to validate user input when constructing git commands, allowing an attacker to inject command-line arguments like `--output=` to write arbitrary files to a victim's home directory without user approval. When a malicious repository instructs the AI model to call this tool with crafted input, sensitive files like SSH keys, shell configuration, or AWS credentials can be overwritten, enabling account compromise or code tampering.

Technologies: codewhale-tui (crates.io), deepseek-tui (crates.io), Hmbown CodeWhale. Vendors: crates.io, Hmbown.

Quick answers

Is CVE-2026-75913 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-75913 being exploited in the wild.
How severe is CVE-2026-75913?
Critical severity, with a CVSS score of 9.3, published 18 August 2026.
Which products and versions are affected?
codewhale-tui (crates.io) >= 0.8.41, < 0.8.64; deepseek-tui (crates.io) >= 0.3.27, <= 0.8.41; Hmbown CodeWhale >= 0.8.41, < 0.8.64.
Is there a fix for CVE-2026-75913?
A patch was published on 2026-09-04: Fixed in CodeWhale 0.8.64 (commit 9a34b5034d29f05d1f28fa61b04719ca6a741020) Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-75913 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-75913?
Check whether you run codewhale-tui (crates.io), deepseek-tui (crates.io) or Hmbown CodeWhale at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is an argument injection (CWE-73, CWE-88) in `crates/tui/src/tools/git_history.rs` where the `rev` parameter is passed directly into the git argv without validation or an end-of-options sentinel. Since `git show` supports `--output=<path>` to redirect output to a file, an attacker can craft `rev` as `--output=/home/victim/.bashrc` to write arbitrary files with `O_WRONLY | O_CREAT | O_TRUNC` permissions. The tool is marked `ApprovalRequirement::Auto` and falsely advertises `ToolCapability::ReadOnly`, so the write occurs silently without user confirmation. Exploitation requires a malicious repository whose auto-loaded `AGENTS.md` instructs the AI model to invoke `git_show` with a crafted `--output=` value, leveraging the prompt-injection threat documented in CVE-2026-45311. The written content includes commit hash, author, date, and diff text—all attacker-controlled—enabling file corruption, SSH key replacement, or shell initialization hijacking.

Affected products

  • Hmbown DeepSeek-TUI >= 0.3.27, <= 0.8.41
  • Hmbown CodeWhale >= 0.8.41, < 0.8.64

Identifiers

  • CVE-2026-75913
  • GHSA-7j5w-7r7x-9v27

Timeline

  • 2026-09-04: disclosed: Published to GitHub Advisory Database
  • 2026-09-04: patched: Fixed in CodeWhale 0.8.64 (commit 9a34b5034d29f05d1f28fa61b04719ca6a741020)

References

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