CVE-2026-66448Network attack vector

Contributor-level script execution via stored DOM XSS

Published Jul 27, 2026 · Updated Jul 27, 2026

Stored DOM-based XSS in WP Chill Gallery PhotoBlocks 1.3.3 and earlier allows remote authenticated users to execute script in viewers' browsers. Patchstack and WP Chill have not published the affected parameter, code locus, or unsafe DOM operation that permits the stored payload. Contributor access is required to store the payload, and a separate user must view the affected content for execution.

CVSS severity6.5
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored DOM-based XSS in WP Chill Gallery PhotoBlocks 1.3.3 and earlier allows remote authenticated users to execute script in viewers' browsers. Patchstack and WP Chill have not published the affected parameter, code locus, or unsafe DOM operation that permits the stored payload. Contributor access is required to store the payload, and a separate user must view the affected content for execution.

The record

CVE
CVE-2026-66448
Published
Jul 27, 2026
Updated
Jul 27, 2026
Vendor
WP Chill
Product
Gallery PhotoBlocks
Classifications
CAPEC-588, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 27, 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=n/a <=1.3.3 changes=[{"at":"1.3.4","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WP Chill · Gallery PhotoBlocksversion=n/a <=1.3.3 changes=[{"at":"1.3.4","status":"unaffected"}]

Published CVSS scores

6.5PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CAPEC-588DOM-Based XSS
T1203Exploitation for Client Execution

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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