Vociferous Unauthenticated Remote Path Traversal (RCE via CSRF)

published 2026-03-11 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-11194

cvss: 10.0; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits: 0; none known

Vociferous provides cross-platform, offline speech-to-text with local AI refinement. Prior to 4.4.2, the vulnerability exists in src/api/system.py within the export_file route. The application accepts a JSON payload containing a filename and content. While the developer intended for a native UI dialog to handle the file path, the API does not validate the filename string before it is processed by the backends filesystem logic. Because the API is unauthenticated and the CORS configuration in app.py is overly permissive (allow_origins=["*"] or allowing localhost), an external attacker can bypass the UI entirely. By using directory traversal sequences (../), an attacker can force the app to write arbitrary data to any location accessible by the current user's permissions. This vulnerability is fixed in 4.4.2.

Patch / fix

fixed in 1

wanderingastronomer vociferous 4.4.2

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: total
Assessed: 7 mo ago (2026-03-11)

Exploit prediction

0.77% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/WanderingAstronomer/Vociferous/security/advisories/GHSA-7cpr-frgj-h85v referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	10.0	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD	3.1	7.1	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Affected products

WanderingAstronomer Vociferous

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory
CWE-306 Missing Authentication for Critical Functionality

References

github.com /WanderingAstronomer/Vociferous/security/advisories/GHSA-7cpr-frgj-h85v
exploit, vendor-advisory

Sources

CVE List CVE-2026-27897
NVD CVE-2026-27897

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary