CVE-2025-55284
CVE-2025-55284 is a high-severity vulnerability in Anthropic Claude Code with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v4: 7.1
- EPSS exploit prediction: 0% (35th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-28585
- Weakness: CWE-78
- Affected product: Anthropic Claude Code
- Published:
- Last modified:
Description
Claude Code is an agentic coding tool. Prior to version 1.0.4, it's possible to bypass the Claude Code confirmation prompts to read a file and then send file contents over the network without user confirmation due to an overly broad allowlist of safe commands. Reliably exploiting this requires the ability to add untrusted content into a Claude Code context window. Users on standard Claude Code auto-update received this fix automatically after release. Current users of Claude Code are unaffected, as versions prior to 1.0.24 are deprecated and have been forced to update.
Frequently asked questions
- What is CVE-2025-55284?
- Claude Code is an agentic coding tool. Prior to version 1.0.4, it's possible to bypass the Claude Code confirmation prompts to read a file and then send file contents over the network without user confirmation due to an overly broad allowlist of safe commands. Reliably exploiting this requires the ability to add untrusted content into a Claude Code context window. Users on standard Claude Code auto-update received this fix automatically after release. Current users of Claude Code are unaffected, as versions prior to 1.0.24 are deprecated and have been forced to update.
- How severe is CVE-2025-55284?
- CVE-2025-55284 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2025-55284 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-55284?
- CVE-2025-55284 affects Anthropic Claude Code. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-55284?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2025-55284 have an EU (EUVD) identifier?
- Yes. CVE-2025-55284 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-28585.
- When was CVE-2025-55284 published?
- CVE-2025-55284 was published on 2025-08-16 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:anthropic:claude_code:*:*:*:*:*:node.js:*:*
More vulnerabilities in Anthropic Claude Code
- CVE-2026-39861 — Critical (CVSS 10.0): Claude Code is an agentic coding tool. Prior to version 2.1.64, Claude Code's sandbox did not prevent sandboxed…
- CVE-2026-25725 — Critical (CVSS 10.0): Claude Code is an agentic coding tool. Prior to version 2.1.2, Claude Code's bubblewrap sandboxing mechanism failed to…
- CVE-2025-66032 — Critical (CVSS 9.8): Claude Code is an agentic coding tool. Prior to 1.0.93, Due to errors in parsing shell commands related to $IFS and…
- CVE-2025-64755 — Critical (CVSS 9.8): Claude Code is an agentic coding tool. Prior to version 2.0.31, due to an error in sed command parsing, it was possible…
- CVE-2025-65099 — Critical (CVSS 9.8): Claude Code is an agentic coding tool. Prior to version 1.0.39, when running on a machine with Yarn 3.0 or above,…
- CVE-2025-59828 — Critical (CVSS 9.8): Claude Code is an agentic coding tool. Prior to Claude Code version 1.0.39, when using Claude Code with Yarn versions…
All CVEs affecting Anthropic Claude Code →
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