Vulnerability · Published Jun 19, 2026 · Assigned by CIRCL
CVE-2026-56138Authenticated Path Traversal in AIL framework /objects/item/diff Allows Reading Gzip-Compressed Files
Medium 5.3
In plain English
A medium-severity path traversal in ail-framework from ail-project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).
Official description
AIL framework contains a path traversal vulnerability in the /objects/item/diff endpoint. The endpoint accepts item identifiers through the s1 and s2 query parameters and, prior to the fix, attempted to retrieve and compare item contents without first verifying that both referenced items existed as valid AIL objects. An authenticated AIL user could craft malicious item identifiers containing path traversal sequences to cause the application to read gzip-compressed files accessible to the AIL process. This could result in unauthorized disclosure of local file contents, limited to files readable by the application and compatible with the expected gzip-compressed item format. The issue was fixed by validating that both requested items exist before their contents are accessed.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ail-project | ail-framework | 0 – before 6.8.0 |
Weakness: CWE-22 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N