Arbitrary file upload in Diem-Project Diem
CVE-2026-82679
A security flaw has been discovered in diem-project diem up to 5.1.3. The impacted element is an unknown function of the file dmFrontPlugin/lib/dmWidget/media/dmWidgetContentBaseMediaForm.php of the component Widget Editor. Performing a manipulation results in unrestricted upload. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (28.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- Diem-Project Diem — versions 5.1.0, 5.1.1, 5.1.2
Weakness classification (CWE)
References
- vuldb.com/vuln/397174 (vdb-entry)
- vuldb.com/vuln/397174/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-82679 (third-party-advisory)
- vuldb.com/submit/894026 (third-party-advisory)
- github.com/diem-project/diem/issues/448 (issue-tracking, exploit)
- github.com/diem-project/diem/ (product)
Frequently asked questions
- What is CVE-2026-82679?
- CVE-2026-82679 is a medium-severity vulnerability in Diem-Project Diem, classified under Improper Access Control. CVSS score: 6.3/10. Published 2026-08-31.
- How severe is CVE-2026-82679?
- Medium severity. CVSS v3 base score is 6.3 out of 10.