CVE-2026-33405Public exploit

UI defacement via unescaped Query Log fields

Published Apr 6, 2026 · Updated Apr 6, 2026

Stored HTML injection in Pi-hole Web Interface 6.0 through 6.4.1 allows attackers to alter Query Log details via crafted EDE text. The formatInfo() function in queries.js inserts data.ede.text, data.upstream, and data.client.ip into detail-view HTML without escaping. An authenticated administrator must expand the affected row; CSP blocks JavaScript, limiting impact to UI defacement and phishing forms.

CVSS severity3.1
Low
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored HTML injection in Pi-hole Web Interface 6.0 through 6.4.1 allows attackers to alter Query Log details via crafted EDE text. The formatInfo() function in queries.js inserts data.ede.text, data.upstream, and data.client.ip into detail-view HTML without escaping. An authenticated administrator must expand the affected row; CSP blocks JavaScript, limiting impact to UI defacement and phishing forms.

The record

CVE
CVE-2026-33405
Published
Apr 6, 2026
Updated
Apr 6, 2026
Vendor
Pi-hole
Product
Pi-hole Web Interface
Classifications
CWE-79, T1659
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Apr 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 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=>= 6.0, < 6.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Pi-hole · Pi-hole Web Interfaceversion=>= 6.0, < 6.5

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
3.1GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:H/UI:R/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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1659Content Injection

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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