CVE-2022-4555Network attack vector

Unauthenticated plugin deactivation via unchecked capability

Published Dec 16, 2022 · Updated Apr 8, 2026

Missing authorization in WP Shamsi 4.1.0 and earlier allows remote attackers to deactivate arbitrary WordPress plugins. The init-hooked deactivate() function processes a requested plugin without checking the caller's capabilities before deactivation. No authentication is required, and deactivating a security plugin can remove defenses needed to block exploitation of other flaws.

CVSS severity6.5
Medium
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in WP Shamsi 4.1.0 and earlier allows remote attackers to deactivate arbitrary WordPress plugins. The init-hooked deactivate() function processes a requested plugin without checking the caller's capabilities before deactivation. No authentication is required, and deactivating a security plugin can remove defenses needed to block exploitation of other flaws.

The record

CVE
CVE-2022-4555
Published
Dec 16, 2022
Updated
Apr 8, 2026
Vendor
wpvar
Product
WP Shamsi
Classifications
CWE-862, T1562.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 16, 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 <=4.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

wpvar · WP Shamsiversion=0 <=4.1.0

Published CVSS scores

6.5WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
5.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1562.001Impair Defenses: Disable or Modify Tools

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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