CVE-2026-90774
rustypaste before 0.18.1 Path Traversal via filename header
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-22 |
| Vendor | orhun |
| Product | rustypaste |
| Published | Sep 13, 2026 |
| Last Updated | Sep 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Affected Versions
orhun / rustypaste
0 < 0.18.1
References
github.com: https://github.com/orhun/rustypaste/issues/622 github.com: https://github.com/orhun/rustypaste github.com: https://github.com/orhun/rustypaste/blob/v0.18.0/src/paste.rs github.com: https://github.com/orhun/rustypaste/commit/ac05d552596af4a8429d80f30d11f67117ce02c8 vulncheck.com: https://www.vulncheck.com/advisories/rustypaste-before-0.18.1-path-traversal-via-filename-header
Credits
🔍 George Chen