CVE-2026-13239Network attack vector

Unauthenticated access bypass via unchecked route parameters

Published Jul 10, 2026 · Updated Jul 10, 2026

Missing authorization in Drupal WissKI before 4.2.0 allows remote attackers to bypass access controls through a Mirador route. The wisski_mirador submodule accepts submitted route parameters without sufficient validation and writes them directly to the session object. The affected submodule must be enabled; successful requests can expose or alter data governed by the bypassed access checks, but do not interrupt service.

CVSS severity6.5
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Drupal WissKI before 4.2.0 allows remote attackers to bypass access controls through a Mirador route. The wisski_mirador submodule accepts submitted route parameters without sufficient validation and writes them directly to the session object. The affected submodule must be enabled; successful requests can expose or alter data governed by the bypassed access checks, but do not interrupt service.

The record

CVE
CVE-2026-13239
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
Avatar Uploader Project
Product
WissKI
Classifications
CWE-862, CAPEC-87, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 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=0.0.0 <4.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Avatar Uploader Project · WissKIversion=0.0.0 <4.2.0

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-862Missing Authorization
CAPEC-87Forceful Browsing
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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