Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/orhun/rustypaste
- https://github.com/orhun/rustypaste/blob/v0.18.0/src/paste.rs
- https://github.com/orhun/rustypaste/commit/ac05d552596af4a8429d80f30d11f67117ce0
- https://github.com/orhun/rustypaste/issues/622
- https://www.vulncheck.com/advisories/rustypaste-before-0.18.1-path-traversal-via
- https://github.com/orhun/rustypaste/issues/622
FAQ
What is CVE-2026-90774?
CVE-2026-90774 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 traver...
How severe is CVE-2026-90774?
CVE-2026-90774 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-90774?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.