CVE-2026-90453
Low
Description
A file-upload handler redirects the authenticated client's browser to a URL taken directly from that same request's Referer header, without validating it against the application's own origin. This allows an authenticated attacker to craft a request that causes another user's browser to be redirected to an arbitrary external destination after completing an upload.
SeverityLow
CVSS3.5
Exploit probability—
ProductMalcolm
PublishedSep 11, 2026
First seenSep 11, 2026
Weakness typeCWE-601Open redirect
How to fix
Update
- CISA Malcolmv26.06.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| CISA Malcolm | v < v26.06.0 | v26.06.0 |
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