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.
Published: 2026-09-13
Score: 8.7 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Sun, 13 Sep 2026 11:00:00 +0000

Type Values Removed Values Added
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.
Title rustypaste before 0.18.1 Path Traversal via filename header
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-13T10:45:44.589Z

Reserved: 2026-09-13T10:14:58.756Z

Link: CVE-2026-90774

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-13T11:17:02.163

Modified: 2026-09-13T11:17:02.163

Link: CVE-2026-90774

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses