CVE-2024-8737Network attack vector

Reflected script execution via unescaped generated URL

Published Sep 13, 2024 · Updated Apr 8, 2026

Reflected XSS in KubiQ PDF Thumbnail Generator 1.3 and earlier allows remote attackers to run scripts after a user opens a crafted link. In the admin-link code at pdf-thumbnail-generator.php line 184, add_query_arg builds a URL that is emitted without appropriate URL escaping. Exploitation requires no account but requires a victim to follow an attacker-supplied link, after which the script runs in that victim's browser context.

CVSS severity6.1
Medium
EPSS probability0.40%
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 KubiQ PDF Thumbnail Generator 1.3 and earlier allows remote attackers to run scripts after a user opens a crafted link. In the admin-link code at pdf-thumbnail-generator.php line 184, add_query_arg builds a URL that is emitted without appropriate URL escaping. Exploitation requires no account but requires a victim to follow an attacker-supplied link, after which the script runs in that victim's browser context.

The record

CVE
CVE-2024-8737
Published
Sep 13, 2024
Updated
Apr 8, 2026
Vendor
KubiQ
Product
PDF Thumbnail Generator
Classifications
CWE-79
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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?

KubiQ · PDF Thumbnail Generatorversion=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 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')

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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