Security readout for executives and security teams
Plain-English summary
CVE-2025-49912 is a stored cross-site scripting issue in the WordPress Email Subscription Popup plugin through version 1.2.26. An attacker with high privileges could save malicious content that later runs in another user’s browser when viewed. Business urgency is moderate unless the plugin is widely deployed or accessible to many privileged users.
Executive priority
Treat as a targeted WordPress hygiene item, not an emergency internet-wide crisis. Prioritize sites that are public-facing, business-critical, or have many privileged editors. If the plugin is unused, removal is the simplest risk reduction.
Technical view
The issue is CWE-79 improper neutralization during web page generation in Nks Email Subscription Popup, package email-subscribe. CVSS 3.1 is 5.9: network accessible, low complexity, high privileges required, user interaction required, and scope changed with limited confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to WordPress sites using Email Subscription Popup version 1.2.26 or earlier. Risk is higher where many administrators or privileged users can modify plugin-controlled content. The source bundle does not identify affected hosting platforms beyond WordPress plugin deployments.
Exploitation context
No CISA KEV listing or cited source indicates active exploitation. The CVSS vector suggests exploitation requires an authenticated high-privilege user and a victim viewing the affected page or interface. Stored XSS can support session abuse or content tampering, but the available sources do not provide exploit details.
Researcher notes
Evidence is limited to the CVE record and Patchstack database reference. The affected range is described as through 1.2.26, while the structured affected data is sparse. No patch version, proof of concept, or exploitation-in-the-wild evidence is provided in the supplied sources.
Mitigation direction
- Inventory WordPress sites for the Email Subscription Popup plugin.
- If installed, determine whether version is 1.2.26 or earlier.
- Check vendor or Patchstack guidance for an updated fixed release.
- Disable or remove the plugin where it is not business-critical.
- Limit high-privilege WordPress accounts to trusted users only.
- Review administrative access and remove unused accounts.
Validation and detection
- Confirm plugin name, package, and installed version from WordPress administration or asset inventory.
- Flag any deployment running Email Subscription Popup 1.2.26 or earlier.
- Check whether a vendor-supported fixed version is available before upgrading.
- Review recent plugin configuration changes by privileged users.
- Monitor for unexpected script-like content in plugin-managed fields.
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-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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-2025-49912 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
- 5.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/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:H/UI:R/S:C/C:L/I:L/A:L1.73.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.9MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
Source materials
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.