CVE-2026-56094Network attack vector

Cross-site document disclosure via siteHash filter preemption

Published Aug 25, 2026 · Updated Aug 25, 2026

Query-filter bypass in TYPO3 Apache Solr for TYPO3 allows remote attackers to read another site's public documents through search. AbstractQueryBuilder::useFilter() keeps a request-provided named siteHash filter, preventing AccessComponent from installing the system siteHash restriction. Exposure requires multiple TYPO3 sites to share one Solr core; the same flaw reaches suggest top results only when suggest is enabled.

CVSS severity6.3
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Query-filter bypass in TYPO3 Apache Solr for TYPO3 allows remote attackers to read another site's public documents through search. AbstractQueryBuilder::useFilter() keeps a request-provided named siteHash filter, preventing AccessComponent from installing the system siteHash restriction. Exposure requires multiple TYPO3 sites to share one Solr core; the same flaw reaches suggest top results only when suggest is enabled.

The record

CVE
CVE-2026-56094
Published
Aug 25, 2026
Updated
Aug 25, 2026
Vendor
in2code GmbH
Product
Apache Solr for TYPO3
Classifications
CWE-943, T1213
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 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 <11.6.6
  2. Affected versionversion=12.0.0 <12.1.4
  3. Affected versionversion=13.0.0 <13.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

in2code GmbH · Apache Solr for TYPO3version=0 <11.6.6; version=12.0.0 <12.1.4; version=13.0.0 <13.1.4

Published CVSS scores

6.3TYPO3CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA: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-943Improper Neutralization of Special Elements in Data Query Logic
T1213Data from Information Repositories

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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