Quick answers
- Is CVE-2026-84048 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-84048 being exploited in the wild.
- How severe is CVE-2026-84048?
- Informational severity, published 15 September 2026.
- Which products and versions are affected?
- JoomGallery < 4.4.2.
- Is there a fix for CVE-2026-84048?
- A patch was published on 2026-09-18: Version 4.4.2 released as security update Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-84048 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-84048?
- Check whether you run JoomGallery at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is an unauthenticated arbitrary file upload flaw in the TUS (Tusd) endpoint of JoomGallery versions prior to 4.4.2. While the TUS endpoint permits file uploads without authentication, the vulnerability is mitigated by server-side restrictions on both filename and file extension, preventing direct control over the uploaded file's name or type. Code execution is possible only under non-standard server configurations. The vulnerability has been patched in version 4.4.2, released on September 18, 2026.
Affected products
- JoomGallery JoomGallery < 4.4.2
Timeline
- 2026-09-15: disclosed
- 2026-09-18: patched: Version 4.4.2 released as security update