CVE-2022-29430Network attack vector

Stored XSS via unvalidated quality setting

Published May 20, 2022 · Updated Apr 28, 2026

Stored XSS in KubiQ PNG to JPG 4.0 and earlier allows remote attackers to inject script through a forged jpg_quality request. The settings handler accepts attacker-controlled jpg_quality data without a WordPress nonce or adequate output neutralization, stores it, and later renders it in the administration interface. Exploitation requires an authenticated administrator to visit attacker-controlled content that submits the forged settings request; the stored script then executes with that browser session's privileges.

CVSS severity4.7
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in KubiQ PNG to JPG 4.0 and earlier allows remote attackers to inject script through a forged jpg_quality request. The settings handler accepts attacker-controlled jpg_quality data without a WordPress nonce or adequate output neutralization, stores it, and later renders it in the administration interface. Exploitation requires an authenticated administrator to visit attacker-controlled content that submits the forged settings request; the stored script then executes with that browser session's privileges.

The record

CVE
CVE-2022-29430
Published
May 20, 2022
Updated
Apr 28, 2026
Vendor
KubiQ
Product
PNG to JPG
Classifications
CWE-352, CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 20, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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=<= 4.0 <=4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

KubiQ · PNG to JPGversion=<= 4.0 <=4.0

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.7PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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