CVE-2026-59873: CWE-770: Allocation of Resources Without Limits or Throttling in isaacs node-tar
node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.19, node-tar does not enforce hard upper bounds on total decompressed data, entry counts, or decompression ratio in extraction and parsing paths such as src/extract.ts, allowing a small crafted gzip bomb to exhaust disk space and CPU. This issue is fixed in version 7.5.19.
AI Analysis
Technical Summary
The node-tar library for Node.js, prior to version 7.5.19, lacks enforcement of hard upper bounds on total decompressed data, entry counts, and decompression ratio in its extraction and parsing code paths (e.g., src/extract.ts). This deficiency enables attackers to craft gzip bombs that can cause resource exhaustion by consuming excessive disk space and CPU during archive extraction. The vulnerability is identified as CWE-770 (Allocation of Resources Without Limits or Throttling). It has a CVSS 4.0 score of 9.2 (critical). The issue is resolved in node-tar version 7.5.19.
Potential Impact
Exploitation of this vulnerability can lead to denial of service conditions by exhausting disk space and CPU resources on systems using vulnerable versions of node-tar during archive extraction. This can disrupt application availability and potentially impact system stability.
Mitigation Recommendations
Upgrade node-tar to version 7.5.19 or later, where the vulnerability is fixed by enforcing limits on decompressed data size, entry counts, and decompression ratio. Patch status is not explicitly stated as 'official-fix' in the vendor advisory, but the description confirms the issue is fixed in 7.5.19. No other mitigations are indicated.
CVE-2026-59873: CWE-770: Allocation of Resources Without Limits or Throttling in isaacs node-tar
Description
node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.19, node-tar does not enforce hard upper bounds on total decompressed data, entry counts, or decompression ratio in extraction and parsing paths such as src/extract.ts, allowing a small crafted gzip bomb to exhaust disk space and CPU. This issue is fixed in version 7.5.19.
CVSS v4.0
Score 9.2critical
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The node-tar library for Node.js, prior to version 7.5.19, lacks enforcement of hard upper bounds on total decompressed data, entry counts, and decompression ratio in its extraction and parsing code paths (e.g., src/extract.ts). This deficiency enables attackers to craft gzip bombs that can cause resource exhaustion by consuming excessive disk space and CPU during archive extraction. The vulnerability is identified as CWE-770 (Allocation of Resources Without Limits or Throttling). It has a CVSS 4.0 score of 9.2 (critical). The issue is resolved in node-tar version 7.5.19.
Potential Impact
Exploitation of this vulnerability can lead to denial of service conditions by exhausting disk space and CPU resources on systems using vulnerable versions of node-tar during archive extraction. This can disrupt application availability and potentially impact system stability.
Mitigation Recommendations
Upgrade node-tar to version 7.5.19 or later, where the vulnerability is fixed by enforcing limits on decompressed data size, entry counts, and decompression ratio. Patch status is not explicitly stated as 'official-fix' in the vendor advisory, but the description confirms the issue is fixed in 7.5.19. No other mitigations are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-07T15:41:53.607Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4e73c2c9d9e3dbe36042c5
Added to database: 07/08/2026, 15:58:58 UTC
Last enriched: 07/08/2026, 16:13:27 UTC
Last updated: 08/20/2026, 10:52:10 UTC
Views: 203
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