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rustypaste before 0.18.1 Path Traversal via filename header

Type: advisorySource: Official CVE List1 source record

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.

Announced Group revision 1
Original source ↗

CVE-2026-90774

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-90774

rustypaste

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "orhun",
    "product": "rustypaste",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "0.18.1",
        "versionType": "semver"
      }
    ],
    "packageURL": "pkg:cargo/rustypaste",
    "defaultStatus": "unaffected"
  }
]
Related CVEs
CVE-2026-90774

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#1633 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement