CVE-2026-66577Network attack vector

Contributor-level stored script execution

Published Sep 17, 2026 · Updated Sep 19, 2026

Stored XSS in Crocoblock JetSearch 3.6.3 and earlier allows remote authenticated users to execute script in another user's browser. Patchstack has not published the affected input, code locus, or missing neutralization operation that permits the stored payload. Contributor access is required to store the payload, and exploitation requires another user to render the affected content.

CVSS severity6.5
Medium
EPSS probability0.22%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Crocoblock JetSearch 3.6.3 and earlier allows remote authenticated users to execute script in another user's browser. Patchstack has not published the affected input, code locus, or missing neutralization operation that permits the stored payload. Contributor access is required to store the payload, and exploitation requires another user to render the affected content.

The record

CVE
CVE-2026-66577
Published
Sep 17, 2026
Updated
Sep 19, 2026
Vendor
Crocoblock
Product
JetSearch
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=3.6.3 changes=[{"at":"3.6.3.1","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Crocoblock · JetSearchversion=n/a <=3.6.3 changes=[{"at":"3.6.3.1","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

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 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-592Stored XSS
T1059.007JavaScript/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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