CVE-2022-36340Network attack vector

Unauthenticated cache deletion via unchecked clear_optin_cache

Published Sep 23, 2022 · Updated Apr 28, 2026

Missing authorization in MailOptin 1.2.49.0 and earlier allows remote attackers to delete opt-in campaign cache data without authentication. The clear_optin_cache function performs the deletion without a capability check or nonce validation on the request. Any unauthenticated network request reaching this function can invalidate opt-in campaign cache data, affecting integrity and potentially service availability.

CVSS severity5.3
Medium
EPSS probability0.70%
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 MailOptin 1.2.49.0 and earlier allows remote attackers to delete opt-in campaign cache data without authentication. The clear_optin_cache function performs the deletion without a capability check or nonce validation on the request. Any unauthenticated network request reaching this function can invalidate opt-in campaign cache data, affecting integrity and potentially service availability.

The record

CVE
CVE-2022-36340
Published
Sep 23, 2022
Updated
Apr 28, 2026
Vendor
ProfilePress Membership Team
Product
MailOptin
Classifications
CWE-862, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 23, 2022CVE 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=<= 1.2.49.0 <=1.2.49.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ProfilePress Membership Team · MailOptinversion=<= 1.2.49.0 <=1.2.49.0

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
6.5PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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 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-862Missing Authorization
T1190Exploit Public-Facing Application

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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