Auth bypass in Rebuild
CVE-2026-102249
A security flaw has been discovered in REBUILD up to 4.4.11. This vulnerability affects unknown code of the file /commons/file-editor-save. The manipulation of the argument url/fileKey results in missing authorization. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Rebuild — versions 4.4.0, 4.4.1, 4.4.10
Weakness classification (CWE)
References
- vuldb.com/vuln/411151 (technical-description, vdb-entry)
- vuldb.com/vuln/411151/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-102249 (third-party-advisory)
- vuldb.com/submit/933733 (third-party-advisory)
- github.com/ASantsSec/CVE/issues/26 (issue-tracking, exploit)
Frequently asked questions
- What is CVE-2026-102249?
- CVE-2026-102249 is a high-severity vulnerability in Rebuild, classified under Missing Authorization. CVSS score: 7.3/10. Published 2026-09-29.
- How severe is CVE-2026-102249?
- High severity. CVSS v3 base score is 7.3 out of 10.