CVE-2026-66623Network attack vector

Reflected XSS via unescaped floating-icon URLs

Published Aug 24, 2026 · Updated Aug 24, 2026

Reflected XSS in Inisev Social Media Share Buttons & Social Sharing Icons 2.9.9 and earlier allows remote attackers to run browser scripts. Threads and Bluesky floating share icons insert the current page URL into generated link output without proper encoding or escaping. A victim must visit an attacker-crafted URL while either floating icon is enabled; injected script then runs in that visitor's browser context.

CVSS severity7.1
High
EPSS probability0.15%
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 Inisev Social Media Share Buttons & Social Sharing Icons 2.9.9 and earlier allows remote attackers to run browser scripts. Threads and Bluesky floating share icons insert the current page URL into generated link output without proper encoding or escaping. A victim must visit an attacker-crafted URL while either floating icon is enabled; injected script then runs in that visitor's browser context.

The record

CVE
CVE-2026-66623
Published
Aug 24, 2026
Updated
Aug 24, 2026
Vendor
Copy Delete Posts
Product
Social Media Share Buttons & Social Sharing Icons
Classifications
CWE-79, CAPEC-591, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 24, 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 <=2.9.9 changes=[{"at":"3.0.0","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Copy Delete Posts · Social Media Share Buttons & Social Sharing Iconsversion=n/a <=2.9.9 changes=[{"at":"3.0.0","status":"unaffected"}]

Published CVSS scores

7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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')
CAPEC-591Reflected XSS
T1203Exploitation for Client Execution

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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