CVE-2026-73340Network attack vector

Contributor-level browser script execution

Published Aug 13, 2026 · Updated Aug 13, 2026

Cross-site scripting in Featured Image from URL 5.3.3 and earlier allows remote authenticated users to inject browser-executed scripts. The public CNA record does not identify the affected field, request path, or faulty input-neutralization operation. Contributor privileges and interaction by another user are required; successful exploitation runs attacker-controlled script in that user's browser.

CVSS severity6.5
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Featured Image from URL 5.3.3 and earlier allows remote authenticated users to inject browser-executed scripts. The public CNA record does not identify the affected field, request path, or faulty input-neutralization operation. Contributor privileges and interaction by another user are required; successful exploitation runs attacker-controlled script in that user's browser.

The record

CVE
CVE-2026-73340
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
FIFU
Product
Featured Image from URL (FIFU)
Classifications
CWE-79, CAPEC-588, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 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=n/a <=5.3.3 changes=[{"at":"6.0.0","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

FIFU · Featured Image from URL (FIFU)version=n/a <=5.3.3 changes=[{"at":"6.0.0","status":"unaffected"}]

Published CVSS scores

6.5PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-588DOM-Based XSS
T1190Exploit Public-Facing Application

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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