CVE-2023-4798Public exploitNetwork attack vector

Contributor-level stored XSS via shortcode attributes

Published Oct 16, 2023 · Updated Aug 2, 2024

Stored XSS in Fullworks Plugins User Avatar - Reloaded before 1.2.2 allows remote authenticated users to inject scripts through avatar shortcodes. The avatar shortcode renderer places attacker-controlled link and target attributes into generated anchor markup without adequate sanitization and output escaping. Contributor-level access is sufficient to save the payload in a post; the script runs when a reviewer opens the post and hovers over the injected element.

CVSS severity5.4
Medium
EPSS probability0.39%
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 Fullworks Plugins User Avatar - Reloaded before 1.2.2 allows remote authenticated users to inject scripts through avatar shortcodes. The avatar shortcode renderer places attacker-controlled link and target attributes into generated anchor markup without adequate sanitization and output escaping. Contributor-level access is sufficient to save the payload in a post; the script runs when a reviewer opens the post and hovers over the injected element.

The record

CVE
CVE-2023-4798
Published
Oct 16, 2023
Updated
Aug 2, 2024
Vendor
Fullworks Plugins
Product
User Avatar - Reloaded
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=0 <1.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Fullworks Plugins · User Avatar - Reloadedversion=0 <1.2.2

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

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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