Security readout for executives and security teams
Plain-English summary
CVE-2021-24371 affects the RSVPMaker WordPress plugin before 8.7.3. A logged-in administrator could make the server request attacker-chosen URLs through the plugin import feature, potentially probing internal systems from the WordPress host. This is not described as a public, unauthenticated takeover issue.
Executive priority
Treat this as a controlled but real risk. It needs remediation on affected WordPress sites, especially where admin accounts are shared, weakly protected, or exposed to phishing. It is lower urgency than unauthenticated internet-facing exploitation, but still relevant for internal network protection.
Technical view
The RSVPMaker import feature at /wp-admin/tools.php?page=rsvpmaker_export_screen accepted a URL and called curl without first validating that it was a remote URL. This created an authenticated admin+ server-side request forgery condition mapped to CWE-918, with internal network scanning noted as the documented impact.
Likely exposure
Exposure is limited to WordPress sites running RSVPMaker before 8.7.3 where an administrator-level account can access the import feature. The source bundle does not identify other affected products or unauthenticated exposure.
Exploitation context
The bundle does not report CISA KEV listing or active exploitation. The cited impact requires a high-privilege authenticated user, such as a malicious or compromised administrator, abusing server-side URL fetching to probe internal network resources.
Researcher notes
Evidence supports an authenticated admin+ SSRF in RSVPMaker before 8.7.3. No CVSS vector, active exploitation claim, or detailed vendor CPE data is present in the bundle. Avoid broad claims beyond WordPress RSVPMaker and the documented import URL handling flaw.
Mitigation direction
- Update RSVPMaker to version 8.7.3 or later.
- Review vendor and plugin guidance for any additional remediation notes.
- Limit WordPress administrator access to trusted users only.
- Remove RSVPMaker if it is unused or no longer required.
- Monitor administrative account activity for unusual import feature use.
Validation and detection
- Inventory WordPress sites using the RSVPMaker plugin.
- Confirm installed RSVPMaker versions are 8.7.3 or later.
- Review which users have administrator-level WordPress access.
- Check whether the import feature is accessible to only intended administrators.
- Document any vulnerable instances and remediation status.
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-918: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. 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 lookupCloud metadata behavior lookup
The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-24371 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/63be225c-ebee-4cac-b43e-cf033ee7425dCVE reference · x_refsource_MISC
- https://codevigilant.com/disclosure/2021/wp-plugin-rsvpmaker/CVE reference · x_refsource_MISC
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.
Server-Side Request Forgery (SSRF)
Server-Side Request Forgery (SSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.