CVE-2022-2540Network attack vector

Stored XSS via nonce-free settings update

Published Sep 6, 2022 · Updated Apr 8, 2026

Cross-site request forgery in Link Optimizer Lite 1.4.5 and earlier allows remote attackers to inject stored scripts via a forged request. The admin_page function in admin.php processes settings-changing requests without validating a nonce, so attacker-controlled script content is saved. Exploitation requires a site administrator to act on the forged request, after which plugin settings can contain persistent attacker-supplied script.

CVSS severity8.8
High
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in Link Optimizer Lite 1.4.5 and earlier allows remote attackers to inject stored scripts via a forged request. The admin_page function in admin.php processes settings-changing requests without validating a nonce, so attacker-controlled script content is saved. Exploitation requires a site administrator to act on the forged request, after which plugin settings can contain persistent attacker-supplied script.

The record

CVE
CVE-2022-2540
Published
Sep 6, 2022
Updated
Apr 8, 2026
Vendor
Adam Bard
Product
Link Optimizer Lite
Classifications
CWE-352, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 6, 2022CVE publishedPublication date reported by the CVE source.
  2. 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.

  1. Affected versionversion=0 <=1.4.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Adam Bard · Link Optimizer Liteversion=0 <=1.4.5

Published CVSS scores

8.8WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

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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-352Cross-Site Request Forgery (CSRF)
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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