CVE-2026-8622Public exploitNetwork attack vector

Administrator-context script execution via unescaped PHP_SELF

Published Jun 24, 2026 · Updated Jun 24, 2026

Reflected XSS in Pixelwelt Image Sizes on Demand 1.3 and earlier allows remote attackers to run scripts in an administrator's browser. The settings page inserts PHP_SELF into a form action without sanitizing the request path or escaping the resulting HTML attribute. Exploitation requires an administrator with manage_options to follow a crafted link; the reflected script runs in that administrator's site origin.

CVSS severity6.1
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Pixelwelt Image Sizes on Demand 1.3 and earlier allows remote attackers to run scripts in an administrator's browser. The settings page inserts PHP_SELF into a form action without sanitizing the request path or escaping the resulting HTML attribute. Exploitation requires an administrator with manage_options to follow a crafted link; the reflected script runs in that administrator's site origin.

The record

CVE
CVE-2026-8622
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
Pixelwelt
Product
Image Sizes on Demand
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 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 <=1.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Pixelwelt · Image Sizes on Demandversion=0 <=1.3

Published CVSS scores

6.1WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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.

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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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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