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Compressing CVE-2026-24884

HIGH
Improper Link Resolution Before File Access (CWE-59)
2026-02-04 security-advisories@github.com GHSA-cc8f-xg8v-72m3
Path Traversal Compressing
8.4
CVSS 3.1 · GitHub Advisory
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Severity by source

GitHub Advisory PRIMARY
8.4 HIGH
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Feb 27, 2026 - 20:27 vuln.today
Public exploit code
Patch released
Feb 27, 2026 - 20:27 nvd
Patch available
CVE Published
Feb 04, 2026 - 20:16 nvd
HIGH 8.4

Blast Radius

ecosystem impact
† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth
  • 2 npm packages depend on compressing (2 direct, 0 indirect)

Ecosystem-wide dependent count for version 2.0.0.

DescriptionGitHub Advisory

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.

AnalysisAI

Compressing library versions 1.10.3 and prior, and 2.0.0 fail to validate symbolic link targets during TAR archive extraction, allowing attackers to write files to arbitrary locations on the filesystem. Public exploit code exists for this vulnerability, which could enable overwriting critical system files or establishing persistence. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Craft malicious TAR archive with symlinks
Delivery
Supply archive to Compressing extraction function
Exploit
Symlinks resolve outside target directory
Execution
Subsequent entries written to arbitrary filesystem locations
Impact
Overwrite sensitive files or create files in critical directories
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Vulnerability AssessmentAI

Exploitation Attacker must provide the TAR archive to be extracted by a Node.js application using Compressing library versions 1.10.3 or prior, or 2.0.0. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 8.4 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker could exploit this vulnerability to overwriting sensitive files or creating new files in security-critical locations.
Remediation A vendor patch is available — apply it immediately. Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Identify all systems and applications using Compressing library versions 2.0.0, 1.10.3, or earlier through dependency scanning. …

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CVE-2026-24884 vulnerability details – vuln.today
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