CVE-2025-64355Network attack vector

Authenticated XSS via unescaped Heading image URL

Published Dec 18, 2025 · Updated Dec 18, 2025

Cross-site scripting in Crocoblock JetElements 2.7.12 and earlier allows remote authenticated users to inject scripts through a Heading image URL. The Heading widget prints its configured image URL without proper output escaping, causing attacker-controlled markup to execute when the affected page is viewed. Contributor-level access is sufficient to save the payload, and viewing the injected page runs it in the visitor’s browser under the page’s origin.

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 Crocoblock JetElements 2.7.12 and earlier allows remote authenticated users to inject scripts through a Heading image URL. The Heading widget prints its configured image URL without proper output escaping, causing attacker-controlled markup to execute when the affected page is viewed. Contributor-level access is sufficient to save the payload, and viewing the injected page runs it in the visitor’s browser under the page’s origin.

The record

CVE
CVE-2025-64355
Published
Dec 18, 2025
Updated
Dec 18, 2025
Vendor
Crocoblock
Product
JetElements
Classifications
CWE-79, CAPEC-588, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 18, 2025Record 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 <=2.7.12 changes=[{"at":"2.7.12.1","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Crocoblock · JetElementsversion=n/a <=2.7.12 changes=[{"at":"2.7.12.1","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
6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/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.

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
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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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