Security readout for executives and security teams
Plain-English summary
Popup by Supsystic for WordPress before 1.10.19 is reported vulnerable to prototype pollution. An attacker could add arbitrary properties to Object.prototype. Business impact depends on how the vulnerable plugin code is reached and used, which the provided sources do not fully describe.
Executive priority
Treat this as a targeted WordPress plugin remediation item. Prioritize externally reachable WordPress sites using the plugin, but do not classify it as confirmed actively exploited from the provided evidence.
Technical view
CVE-2023-3186 maps to CWE-1321. The source states the plugin can allow arbitrary property injection into Object.prototype before version 1.10.19. No CVSS vector, attacker privileges, request path, or concrete impact chain is provided in the bundle.
Likely exposure
Exposure is most likely on WordPress sites with Popup by Supsystic installed below 1.10.19. Sites without this plugin, or on 1.10.19 or later, are not shown as affected by the provided sources.
Exploitation context
The WPScan reference is tagged as exploit and technical description, but the bundle does not provide exploit details. CISA KEV is false, so there is no source-backed evidence here of known active exploitation.
Researcher notes
The key technical issue is prototype pollution in JavaScript object handling. The provided sources do not establish the triggering endpoint, authentication requirements, exploit reliability, or downstream impact such as XSS, denial of service, or privilege escalation.
Mitigation direction
- Inventory WordPress sites for Popup by Supsystic installations.
- Upgrade Popup by Supsystic to 1.10.19 or later.
- Disable or remove the plugin where it is not required.
- Review vendor and WPScan guidance for any additional fixes.
Validation and detection
- Confirm the installed plugin version on each WordPress site.
- Flag any Popup by Supsystic version below 1.10.19.
- Verify remediation by rechecking plugin inventory after upgrade or removal.
- Track the CVE record for severity or affected-version updates.
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-1321: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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-2023-3186 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://wpscan.com/vulnerability/545007fc-3173-47b1-82c4-ed3fd1247b9cCVE reference · exploit, vdb-entry
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.
Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.