Security readout for executives and security teams
Plain-English summary
This vulnerability lets an unauthenticated internet user delete MailOptin opt-in campaign cache data on affected WordPress sites. The direct business impact is disruption or tampering with marketing campaign cache behavior, not data theft based on the supplied sources.
Executive priority
Prioritize remediation on public WordPress sites using MailOptin because the flaw requires no login. It is not ranked critical because supplied evidence shows limited integrity and availability impact and no confirmed exploitation.
Technical view
CVE-2022-36340 is a CWE-862 missing authorization flaw in MailOptin for WordPress versions <= 1.2.49.0. CVSS 3.1 is 6.5: network reachable, low complexity, no privileges, no user interaction, with low integrity and availability impact and no confidentiality impact.
Likely exposure
Exposure is likely limited to WordPress sites with the MailOptin plugin installed at version 1.2.49.0 or earlier, especially internet-facing sites where unauthenticated users can reach plugin functionality.
Exploitation context
The source bundle does not indicate CISA KEV listing or active exploitation. The described issue is unauthenticated cache deletion, so defenders should treat it as externally reachable but limited-impact unless local evidence shows abuse.
Researcher notes
Evidence identifies missing authorization in MailOptin optin campaign cache deletion. The supplied data does not include endpoint details, exploit proof, active exploitation, or an explicit fixed version, so validation should remain version and behavior focused.
Mitigation direction
- Inventory WordPress sites for MailOptin plugin installations.
- Update MailOptin beyond version 1.2.49.0 if vendor guidance confirms a fixed release.
- If updating is not possible, disable or remove the plugin until remediated.
- Review Patchstack and the plugin changelog for vendor-specific remediation guidance.
Validation and detection
- Confirm each WordPress site's installed MailOptin version.
- Check whether any site runs MailOptin version 1.2.49.0 or earlier.
- Review web and WordPress logs for suspicious unauthenticated plugin activity.
- Validate opt-in campaign cache behavior after remediation.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-862: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-36340 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L3.92.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://patchstack.com/database/vulnerability/mailoptin/wordpress-mailoptin-plugin-1-2-49-0-unauthenticated-optin-campaign-cache-deletion-vulnerability/_s_id=cveCVE reference · x_refsource_CONFIRM
- https://plugins.svn.wordpress.org/mailoptin/trunk/changelog.txtCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Missing Authorization
Missing Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.