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HIGH severity

CVE-2026-102249 — ASantsSec

HIGH

CVE-2026-102249 is a high-severity (CVSS 7.3) CWE-862 vulnerability. No vendor fix is recorded yet; mitigation options are listed below.

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…

Published
Sep 29, 2026
Updated
Sep 29, 2026
Affected
—
Patched
—
Exploits
None indexed
Exploitation data as of Sep 29, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs19th percentile — riskier than 19% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2026-102249 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 380,526 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Description

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.

Detection & mitigation playbook

Vulnerability

  1. Detect

    Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).

  2. Remediation status

    No fixed release is recorded for CVE-2026-102249 yet. Track the upstream advisory, and apply the exposure-reduction steps below in the meantime.

  3. Mitigate without a patch

    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

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.
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