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CompressingApplication · Node Modules

CVE-2026-24884

HIGH · 7.8 CVSS v3.1 Published 2026-02-04
Fix available
A fix is available. Upgrade to 1.10.4 or later.
See remediation →
81/100
Remediation priority · High
Public exploit No privileges Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-59

A file operation follows a symbolic link without checking where it actually points, so an attacker who can plant or swap a link redirects the operation to a file they should not be able to touch. It is a common local privilege-escalation primitive. Remediation is resolving and validating the real target path, and avoiding operations on attacker-controllable links.

General guidance for the link following (symlink) class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
CompressingApplication
Affected:< 1.10.4= 2.0.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 1.10.4 or later
Fixed in 1.10.4
Vendor patch github.com →
Recommended fix High confidence

1.10.4 or 2.0.1 (choose based on major version line)

  1. Check your current version of the 'compressing' package by running 'npm list compressing' or inspecting package.json
  2. Determine whether to upgrade to the 1.x or 2.x release line based on your project's compatibility requirements
  3. Run 'npm install compressing@^1.10.4' to upgrade to the 1.x stable release, or 'npm install compressing@^2.0.1' to upgrade to the 2.x release line
  4. Run 'npm update' to ensure dependencies are resolved
  5. Verify the upgrade was successful by running 'npm list compressing' and confirming the installed version is 1.10.4+ or 2.0.1+
  6. Re-run your test suite to verify archive extraction functionality remains intact
  7. If using the tar extraction functionality, validate that symlink handling now properly restricts targets to within the extraction directory

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,950. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-24884 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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