Security readout for executives and security teams
Plain-English summary
CVE-2026-1648 affects the WordPress Performance Monitor plugin through version 1.0.6. An unauthenticated attacker can make the website server send requests to arbitrary destinations. This can expose internal services and may become more serious if chained with vulnerable internal components such as Redis.
Executive priority
Treat as high priority for internet-facing WordPress sites. Prioritize rapid inventory and removal or update if the plugin is present, especially in environments with sensitive internal services reachable from the web server.
Technical view
The plugin’s REST endpoint /wp-json/performance-monitor/v1/curl_data insufficiently validates the url parameter, enabling SSRF, including dangerous protocols such as Gopher. The CVSS 3.1 score is 7.2. The source bundle states unauthenticated network exploitation and possible RCE through chaining, but does not provide a named fixed version.
Likely exposure
Public WordPress sites running Performance Monitor up to and including 1.0.6 are the primary exposure. Risk is higher where the web server can reach internal services, cloud metadata endpoints, or unauthenticated backend services.
Exploitation context
No CISA KEV listing or cited source in the bundle confirms active exploitation. The vulnerability is still significant because it is unauthenticated, network-reachable, and can interact with internal services from the server’s trusted network position.
Researcher notes
The provided references point to the REST callback and curl handling code in version 1.0.6. The CVE metadata has an apparent affected-version inconsistency, while the description states all versions through 1.0.6. No fixed version is identified in the supplied sources.
Mitigation direction
- Check WordPress admin and asset inventory for Performance Monitor plugin usage.
- If installed, verify whether the version is 1.0.6 or earlier.
- Check vendor and WordPress plugin guidance for an updated fixed release.
- If no fixed version is available, disable or remove the plugin.
- Restrict server outbound access to internal-only services where feasible.
- Harden Redis and other internal services against unauthenticated access.
Validation and detection
- Confirm whether the vulnerable REST endpoint is present on affected WordPress sites.
- Review plugin source or installed version for url parameter handling.
- Check web logs for unexpected requests to the curl_data REST endpoint.
- Review outbound network logs for unusual internal or non-HTTP destinations.
- Validate remediation by confirming the plugin is updated, disabled, or removed.
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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program 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-2026-1648 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
- High
- CVSS
- 7.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
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:C/C:L/I:L/A:N3.92.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c8f42f17-bce2-421e-9031-bfa0f8c26b2a?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/performance-monitor/tags/1.0.6/includes/class-rest-callback.php#L168CVE reference
- https://plugins.trac.wordpress.org/browser/performance-monitor/tags/1.0.6/admin/class-curl.php#L50CVE reference
- https://github.com/assetnote/blind-ssrf-chainsCVE reference
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.