CVE-2026-90774CWE-22path-traversal

CVE-2026-90774

High · published September 13, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
71.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
8.7 · 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
EPSS
0.01358 · 71.5th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-09-13T15:17Z
References (6)
https://github.com/orhun/rustypaste · [email protected]https://github.com/orhun/rustypaste/blob/v0.18.0/src/paste.rs · [email protected]https://github.com/orhun/rustypaste/commit/ac05d552596af4a8429d80f30d11f67117ce02c8 · [email protected]https://github.com/orhun/rustypaste/issues/622 · [email protected]https://www.vulncheck.com/advisories/rustypaste-before-0.18.1-path-traversal-via-filename-header · [email protected]https://github.com/orhun/rustypaste/issues/622 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 15 SEP 03:22Z
    EPSS moved — → 0%
    epss
  • 13 SEP 10:45Z
    rustypaste before 0.18.1 Path Traversal via filename header
    cvelistv5