Server-Side Request Forgery in Malcolm
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.
Summary
An application programming interface endpoint accepts a user-supplied value and interpolates it directly into the path of a backend request to the underlying search and analytics data store, without restricting its contents. This allows an authenticated attacker to substitute an arbitrary backend path, causing the application's own elevated service credentials to be used against unintended internal endpoints. This could allow an attacker to enumerate or read internal configuration and administrative data from the backend data store that would otherwise be restricted.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Malcolm (CISA) Fixed in v26.06.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
CISA Malcolm — raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/O…
15 records Highest priority Priority MEDIUM 1 MEDIUM, 14 LOW
Other records, highest priority first
- TI-2026-61492 Use of default credentials in MalcolmPriority MEDIUM 47
- TI-2026-61480 OS Command Injection in MalcolmPriority LOW 39
- TI-2026-61485 Missing Authentication for Critical Function in MalcolmPriority LOW 36
Timeline
- 2026-10-02 Threatist record created from CVE-2026-90446
- 2026-10-03 Alias added: GHSA-q9h9-qwh3-9392
References
More CISA vulnerabilities
- TI-2026-69642 Server-side request forgery in Malcolm file upload component CVSS 3.1HIGH 7.1
- TI-2026-69640 Cross-Site Request Forgery in Malcolm CVSS 3.1HIGH 7.1
- TI-2026-69638 Compressed file uploads in Malcolm can exhaust shared disk space CVSS 3.1MEDIUM 6.5
- TI-2026-69637 Incorrect authorization in Malcolm exposes role-restricted paths CVSS 3.1MEDIUM 5.4
- TI-2025-24590 CISA Thorium download stream divide by zero CVSS 4.0MEDIUM 5.3
- TI-2025-24585 CISA Thorium insecure downloaded file path validation CVSS 4.0MEDIUM 5.3
Sources
- CVE-2026-90446 · CVE Program
- CVE-2026-90446 · NVD
- FIRST EPSS
- GHSA-q9h9-qwh3-9392 · 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