CVE-2026-90774
High
Description
rustypaste before 0.18.1 validates the destination path before applying the optional custom filename HTTP header, allowing attackers to bypass directory-escape checks. Attackers can supply path traversal sequences in the filename header to write files outside the configured upload directory to arbitrary locations.
SeverityHigh
CVSS7.5
Exploit probability—
ProductOrhun Rustypaste
PublishedSep 13, 2026
First seenSep 13, 2026
Weakness typeCWE-22Path traversal
How to fix
Update
- orhun rustypaste0.18.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| orhun rustypaste | v < 0.18.1 | 0.18.1 |
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