CVE-2026-9253Network attack vector

Unauthenticated stored XSS via customerInfos parameter

Published Jul 9, 2026 · Updated Jul 9, 2026

Stored XSS in Loopus Tech WP Cost Estimation & Payment Forms Builder 10.5.97 and earlier allows remote attackers to inject scripts. The plugin accepts the customerInfos parameter without sufficient sanitization and later renders the stored value without output escaping. No authentication is required to store the payload; the resulting script runs when the injected page is opened in a user's browser.

CVSS severity7.2
High
EPSS probability0.32%
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 Loopus Tech WP Cost Estimation & Payment Forms Builder 10.5.97 and earlier allows remote attackers to inject scripts. The plugin accepts the customerInfos parameter without sufficient sanitization and later renders the stored value without output escaping. No authentication is required to store the payload; the resulting script runs when the injected page is opened in a user's browser.

The record

CVE
CVE-2026-9253
Published
Jul 9, 2026
Updated
Jul 9, 2026
Vendor
Loopus Tech
Product
WP Cost Estimation & Payment Forms Builder
Classifications
CWE-79, T1185
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 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 <=10.5.97

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Loopus Tech · WP Cost Estimation & Payment Forms Builderversion=0 <=10.5.97

Published CVSS scores

7.2GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1185Browser Session Hijacking

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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