CVE-2021-24616Network attack vector

Admin-level stored XSS via unescaped image URL

Published Nov 8, 2021 · Updated Aug 3, 2024

Stored XSS in AddToAny Share Buttons before 1.7.48 allows remote authenticated users to inject script through the Image URL setting. The plugin stores the administrator-supplied Image URL and emits it into share-button markup without output escaping. Administrator privileges are required, and the payload executes when another user loads the affected page, enabling script actions in that user's browser.

CVSS severity4.8
Medium
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in AddToAny Share Buttons before 1.7.48 allows remote authenticated users to inject script through the Image URL setting. The plugin stores the administrator-supplied Image URL and emits it into share-button markup without output escaping. Administrator privileges are required, and the payload executes when another user loads the affected page, enabling script actions in that user's browser.

The record

CVE
CVE-2021-24616
Published
Nov 8, 2021
Updated
Aug 3, 2024
Vendor
AddToAny
Product
AddToAny Share Buttons
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 8, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=1.7.48 <1.7.48

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

AddToAny · AddToAny Share Buttonsversion=1.7.48 <1.7.48

Published CVSS scores

4.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
3.5NVDAV:N/AC:M/Au:S/C:N/I:P/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
Privilegesadmin
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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