CVE-2026-5226Public exploitNetwork attack vector

Reflected XSS via unescaped URL path

Published Apr 11, 2026 · Updated Apr 11, 2026

Reflected XSS in Themeisle Optimole 4.2.3 and earlier allows remote attackers to run scripts via crafted URL paths. get_current_url() passes the user-controlled request path to replace_content(), where str_replace() embeds it in JavaScript without context-aware escaping. A victim must follow the crafted link, after which the script runs in the affected site's browser origin and can read or alter data available to that session.

CVSS severity6.1
Medium
EPSS probability0.50%
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 Themeisle Optimole 4.2.3 and earlier allows remote attackers to run scripts via crafted URL paths. get_current_url() passes the user-controlled request path to replace_content(), where str_replace() embeds it in JavaScript without context-aware escaping. A victim must follow the crafted link, after which the script runs in the affected site's browser origin and can read or alter data available to that session.

The record

CVE
CVE-2026-5226
Published
Apr 11, 2026
Updated
Apr 11, 2026
Vendor
Query Solutions Ltd.
Product
Optimole
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 11, 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 <=4.2.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Query Solutions Ltd. · Optimoleversion=0 <=4.2.3

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')
T1204.001User Execution: Malicious Link

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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