Vulnerability Description
TestLink 1.9.20 and prior contains an insecure direct object reference vulnerability that allows any authenticated user, including low-privilege guest accounts, to read arbitrary attachments by supplying an integer attachment ID to the attachmentdownload.php handler without any project or role authorization check. Attackers can enumerate sequential integer IDs through the attachment download endpoint to retrieve file contents from private projects they have no membership in, bypassing the per-project access control model and exposing test specifications, requirements documents, execution evidence, and other sensitive uploaded files across the entire installation.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/TestLinkOpenSourceTRMS/testlink-code
- https://github.com/geo-chen/oss/blob/main/testlink-code.md
- https://www.vulncheck.com/advisories/testlink-and-prior-authenticated-idor-via-a
FAQ
What is CVE-2026-70561?
CVE-2026-70561 is a vulnerability with a CVSS score of 6.5 (MEDIUM). TestLink 1.9.20 and prior contains an insecure direct object reference vulnerability that allows any authenticated user, including low-privilege guest accounts, to read arbitrary attachments by supply...
How severe is CVE-2026-70561?
CVE-2026-70561 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-70561?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.