Stored script injection via missing nonce validation
Published Jun 13, 2025 · Updated Apr 8, 2026
CSRF in the Link Shield plugin for WordPress 0.5.4 and earlier allows remote attackers to store malicious scripts through a forged request. The link_shield_menu_options() handler accepts an administrator's settings submission without valid nonce verification, allowing attacker-controlled settings and script content to be saved. Exploitation requires an administrator to perform an attacker-induced action, after which the stored script executes when an affected page is viewed.
Summary
What happened
CSRF in the Link Shield plugin for WordPress 0.5.4 and earlier allows remote attackers to store malicious scripts through a forged request. The link_shield_menu_options() handler accepts an administrator's settings submission without valid nonce verification, allowing attacker-controlled settings and script content to be saved. Exploitation requires an administrator to perform an attacker-induced action, after which the stored script executes when an affected page is viewed.
The record
- CVE
- CVE-2025-5926
- Published
- Jun 13, 2025
- Updated
- Apr 8, 2026
- Vendor
- José Conti
- Product
- Link Shield
- Classifications
- CWE-352, T1189
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 13, 2025CVE publishedPublication date reported by the CVE source.
- Apr 8, 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.
- Affected versionversion=0 <=0.5.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
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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.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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