Compressing Vulnerable to Arbitrary File Write via Symlink Extraction
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
Compressing is a compressing and uncompressing lib for node. In version 2.0.0 and 1.10.3 and prior, Compressing extracts TAR archives while restoring symbolic links without validating their targets. By embedding symlinks that resolve outside the intended extraction directory, an attacker can cause subsequent file entries to be written to arbitrary locations on the host file system. Depending on the extractor’s handling of existing files, this behavior may allow overwriting sensitive files or creating new files in security-critical locations. This issue has been patched in versions 1.10.4 and 2.0.1.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| node-modules | compressing | = 2.0.0; before 1.10.4 | 1.10.4 | Patch available | CNA |
| — | compressing (npm) | 2.0.0 to before 2.0.1 | 2.0.1 | Patch available | GHSA-cc8f-xg8v-72m3 |
| — | compressing (npm) | before 1.10.4 | 1.10.4 | Patch available | GHSA-cc8f-xg8v-72m3 |
- compressing Vendornode-modules Affected = 2.0.0; before 1.10.4 Fixed in 1.10.4 Patch available CNA
- compressing (npm) Vendor— Affected 2.0.0 to before 2.0.1 Fixed in 2.0.1 Patch available GHSA-cc8f-xg8v-72m3
- compressing (npm) Vendor— Affected before 1.10.4 Fixed in 1.10.4 Patch available GHSA-cc8f-xg8v-72m3
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:node-modules:compressing:*:*:*:*:*:node.js:*:* | before 1.10.4 | Vulnerable | node-modules |
| cpe:2.3:a:node-modules:compressing:2.0.0:*:*:*:*:node.js:*:* | 2.0.0 | Vulnerable | node-modules |
- cpe:2.3:a:node-modules:compressing:*:*:*:*:*:node.js:*:* Versions before 1.10.4 Vulnerable ·node-modules
- cpe:2.3:a:node-modules:compressing:2.0.0:*:*:*:*:node.js:*:* Versions 2.0.0 Vulnerable ·node-modules
Remediation
- Fix · CNA compressing (node-modules) Fixed in 1.10.4
- Fix · GHSA-cc8f-xg8v-72m3 compressing (npm) Fixed in 2.0.1 Advisory →
- Fix · GHSA-cc8f-xg8v-72m3 compressing (npm) Fixed in 1.10.4 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-24884
- 2026-10-03 Alias added: GHSA-cc8f-xg8v-72m3
References
Patch 2
More node-modules Compressing vulnerabilities
- TI-2026-29585 Complete Bypass of CVE-2026-24884 Patch via Git-Delivered Symlink Poisoning in compressing CVSS 3.1HIGH 8.4
Sources
- CVE-2026-24884 · CVE Program
- CVE-2026-24884 · NVD
- FIRST EPSS
- GHSA-cc8f-xg8v-72m3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences