CVE-2023-7251Network attack vector

Contributor-level stored XSS via shortcode escaping failure

Published Mar 26, 2024 · Updated Apr 28, 2026

Stored XSS in Plugin Planet User Submitted Posts 20230901 and earlier allows remote authenticated users to inject scripts through shortcodes. The shortcode handlers accept contributor-controlled input without sufficient sanitization and output escaping, so a crafted payload is stored in a page and rendered as executable script. Contributor-level access is required, and exploitation occurs when another user opens the injected page, executing attacker-supplied script in that site's browser context.

CVSS severity6.5
Medium
EPSS probability0.34%
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 Plugin Planet User Submitted Posts 20230901 and earlier allows remote authenticated users to inject scripts through shortcodes. The shortcode handlers accept contributor-controlled input without sufficient sanitization and output escaping, so a crafted payload is stored in a page and rendered as executable script. Contributor-level access is required, and exploitation occurs when another user opens the injected page, executing attacker-supplied script in that site's browser context.

The record

CVE
CVE-2023-7251
Published
Mar 26, 2024
Updated
Apr 28, 2026
Vendor
Plugin Planet
Product
User Submitted Posts
Classifications
CWE-79, CAPEC-592, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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 <=20230901 changes=[{"at":"20230902","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Plugin Planet · User Submitted Postsversion=n/a <=20230901 changes=[{"at":"20230902","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.

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-592Stored XSS
T1189Drive-by Compromise

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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