TestLinkOpenSourceTRMS TestLink up to 1.9.20 Attachment Download attachmentdownload.php attachment ID resource injection

Summaryinfo

A vulnerability identified as problematic has been detected in TestLinkOpenSourceTRMS TestLink up to 1.9.20. Affected is an unknown function of the file attachmentdownload.php of the component Attachment Download. This manipulation of the argument attachment ID causes resource injection. This vulnerability is tracked as CVE-2026-70561. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in TestLinkOpenSourceTRMS TestLink up to 1.9.20 and classified as problematic. Affected by this vulnerability is some unknown functionality of the file attachmentdownload.php of the component Attachment Download. The manipulation of the argument attachment ID with an unknown input leads to a resource injection vulnerability. The CWE definition for the vulnerability is CWE-99. The product receives input from an upstream component, but it does not restrict or incorrectly restricts the input before it is used as an identifier for a resource that may be outside the intended sphere of control. As an impact it is known to affect confidentiality. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-70561 since 08/04/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/07/2026).

By approaching the search of inurl:attachmentdownload.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• TestLinkOpenSourceTRMS

Name

• TestLink

Version

• 1.9.0
• 1.9.1
• 1.9.2
• 1.9.3
• 1.9.4
• 1.9.5
• 1.9.6
• 1.9.7
• 1.9.8
• 1.9.9
• 1.9.10
• 1.9.11
• 1.9.12
• 1.9.13
• 1.9.14
• 1.9.15
• 1.9.16
• 1.9.17
• 1.9.18
• 1.9.19
• 1.9.20

License

• open-source

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

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Entryinfo

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