CVE-2026-27897Public exploit

Arbitrary file write via unvalidated export path

Published Mar 11, 2026 · Updated Mar 11, 2026

Path traversal in Vociferous before 4.4.2 allows local users to write arbitrary files through its unauthenticated export API. The export_file route in src/api/system.py passes an unvalidated JSON filename containing traversal sequences into save-dialog filesystem handling. Exploitation requires a running victim instance and approval of the native Save dialog; resulting writes use the victim's filesystem permissions.

CVSS severity7.1
High
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Vociferous before 4.4.2 allows local users to write arbitrary files through its unauthenticated export API. The export_file route in src/api/system.py passes an unvalidated JSON filename containing traversal sequences into save-dialog filesystem handling. Exploitation requires a running victim instance and approval of the native Save dialog; resulting writes use the victim's filesystem permissions.

The record

CVE
CVE-2026-27897
Published
Mar 11, 2026
Updated
Mar 11, 2026
Vendor
WanderingAstronomer
Product
Vociferous
Classifications
CWE-22, CWE-306
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 4.4.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

WanderingAstronomer · Vociferousversion=< 4.4.2

Published CVSS scores

7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
7.1GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-306Missing Authentication for Critical Function

Public exploit references

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Technologies

Your stack

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Your stack

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