MediumVulnerabilityLLM-specific

CVE-2025-59829: Claude Code permission deny rules bypassed via symlinks

Source: NVD(opens in a new tab)
Identifier: CVE-2025-59829
Published: October 3, 2025
Record updated: October 9, 2026

Affected: @anthropic-ai/claude-code < 1.0.120
Fixed in: 1.0.120
released September 19, 2025, 14 days before disclosure
Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.4%

Summary

Claude Code versions below 1.0.120 did not account for symlinks when checking permission deny rules. If a user denied Claude Code access to a file, but Claude Code could reach a symlink pointing to that file, Claude Code could still access the file.

Mitigation

Fixed in version 1.0.120. Standard auto-update installs the fix automatically; users performing manual updates are advised to update to the latest version.

Details

Scores and exploitation

CVSS score: 6.5(medium)
Patch available: Yes
EPSS: 0.4%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on November 4, 2026.

Weaknesses and techniques

Weakness (CWE): CWE-61

Affected

Packages: @anthropic-ai/claude-code@< 1.0.120 (fixed: 1.0.120)
Vendors: Anthropic

Classification

Attack type: Other
Attack sophistication: Moderate
AI component targeted: Agent
Impact: Confidentiality
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2025-59829

First tracked: February 15, 2026 at 08:52 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 95% (self-assessed)

Topics

AI agents

Summary

Mitigation

Topics

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