CVE-2026-18344Network attack vector

Reflected XSS via unescaped id attribute

Published Aug 1, 2026 · Updated Aug 1, 2026

Reflected XSS in I13 Web Solution Responsive Thumbnail Slider before 1.1.53 allows remote attackers to run scripts via a crafted id parameter. The responsive_thumbnail_image_management() function echoes $_GET['id'] into a double-quoted HTML attribute without esc_attr(), while its loose numeric check accepts numeric-prefix strings. Exploitation requires no authentication but does require a user to follow the crafted link, exposing the user's browser context to attacker-controlled script actions.

CVSS severity6.1
Medium
EPSS probability0.22%
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 I13 Web Solution Responsive Thumbnail Slider before 1.1.53 allows remote attackers to run scripts via a crafted id parameter. The responsive_thumbnail_image_management() function echoes $_GET['id'] into a double-quoted HTML attribute without esc_attr(), while its loose numeric check accepts numeric-prefix strings. Exploitation requires no authentication but does require a user to follow the crafted link, exposing the user's browser context to attacker-controlled script actions.

The record

CVE
CVE-2026-18344
Published
Aug 1, 2026
Updated
Aug 1, 2026
Vendor
I13 Web Solution
Product
Responsive Thumbnail Slider
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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 <1.1.53

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

I13 Web Solution · Responsive Thumbnail Sliderversion=0 <1.1.53

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1189Drive-by Compromise

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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