CVE-2026-41936Public exploitNetwork attack vector

File disclosure and privilege escalation via XML import

Published May 6, 2026 · Updated May 6, 2026

XML external entity injection in Vvveb before 1.0.8.2 allows remote authenticated users to read files and modify database records. Xml::import() passes uploaded XML to DOMDocument::loadXML() with LIBXML_NOENT, resolving file:// and php://filter entities into database-bound values. The default site_admin permission reaches Tools/Import, and the same insert path permits replacement of a super_admin password hash.

CVSS severity8.6
High
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

XML external entity injection in Vvveb before 1.0.8.2 allows remote authenticated users to read files and modify database records. Xml::import() passes uploaded XML to DOMDocument::loadXML() with LIBXML_NOENT, resolving file:// and php://filter entities into database-bound values. The default site_admin permission reaches Tools/Import, and the same insert path permits replacement of a super_admin password hash.

The record

CVE
CVE-2026-41936
Published
May 6, 2026
Updated
May 6, 2026
Vendor
givanz
Product
Vvveb
Classifications
CWE-611, T1098, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 6, 2026CVE publishedPublication date reported by the CVE source.
  2. May 6, 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 <1.0.8.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

givanz · Vvvebversion=0 <1.0.8.2

Published CVSS scores

8.6VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
8.1VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1098Account Manipulation
T1005Data from Local System

Public exploit references

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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