CVE-2026-90445: CWE-22 Improper limitation of a pathname to a restricted directory ('path traversal') in CISA Malcolm
An interface that accepts file uploads from authenticated users extracts the contents of uploaded archives without validating that extracted file paths remain within the intended destination directory. This allows an authenticated attacker to craft an archive whose entries traverse outside the destination directory, causing the extraction process to write files to arbitrary locations with the privileges of that process. This could allow an attacker to inject fabricated records into the system's stored data or tamper with application configuration.
AI Analysis
Technical Summary
This vulnerability arises from improper limitation of pathname during archive extraction in CISA Malcolm. The interface accepts file uploads from authenticated users and extracts archive contents without verifying that extracted file paths do not traverse outside the intended destination directory. This allows an attacker with authentication privileges to craft an archive that writes files to arbitrary locations with the process's privileges, enabling data injection or configuration tampering.
Potential Impact
An authenticated attacker can exploit this flaw to write files to arbitrary locations on the system with the privileges of the application process. This may lead to injection of fabricated records into stored data or modification of application configuration, potentially compromising the integrity and reliability of the system.
Mitigation Recommendations
No patch or official fix information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict archive uploads to trusted users and monitor for suspicious activity related to file extraction.
CVE-2026-90445: CWE-22 Improper limitation of a pathname to a restricted directory ('path traversal') in CISA Malcolm
Description
An interface that accepts file uploads from authenticated users extracts the contents of uploaded archives without validating that extracted file paths remain within the intended destination directory. This allows an authenticated attacker to craft an archive whose entries traverse outside the destination directory, causing the extraction process to write files to arbitrary locations with the privileges of that process. This could allow an attacker to inject fabricated records into the system's stored data or tamper with application configuration.
CVSS v4.0
Score 7.1high
Affected software
CISA
Malcolm
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from improper limitation of pathname during archive extraction in CISA Malcolm. The interface accepts file uploads from authenticated users and extracts archive contents without verifying that extracted file paths do not traverse outside the intended destination directory. This allows an attacker with authentication privileges to craft an archive that writes files to arbitrary locations with the process's privileges, enabling data injection or configuration tampering.
Potential Impact
An authenticated attacker can exploit this flaw to write files to arbitrary locations on the system with the privileges of the application process. This may lead to injection of fabricated records into stored data or modification of application configuration, potentially compromising the integrity and reliability of the system.
Mitigation Recommendations
No patch or official fix information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict archive uploads to trusted users and monitor for suspicious activity related to file extraction.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- icscert
- Date Reserved
- 2026-09-11T21:00:07.497Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa47a7955bf5e2cf581b367
Added to database: 09/11/2026, 22:02:33 UTC
Last enriched: 09/11/2026, 22:16:50 UTC
Last updated: 09/11/2026, 22:23:22 UTC
Views: 5
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.