Security readout for executives and security teams
Plain-English summary
CVE-2013-10026 is a cross-site scripting issue in the WordPress Mail Subscribe List Plugin. A remote authenticated user could manipulate name or email input so script content is reflected or stored through index.php. The documented fix is upgrading the plugin to version 2.1.
Executive priority
Prioritize remediation as a normal web application security update, especially on public WordPress sites with user accounts. Business impact is likely moderate because the issue is XSS with authenticated access required, but it can still affect trust, session integrity, and site administration workflows.
Technical view
The issue is CWE-79 in Mail Subscribe List Plugin versions 2.0.0 through 2.0.10. VulDB describes manipulation of sml_name or sml_email in index.php leading to XSS. CVSS v2 is 4.0 with network access, low complexity, single authentication, partial integrity impact, and no confidentiality or availability impact.
Likely exposure
Exposure is limited to WordPress sites running Mail Subscribe List Plugin version 2.0.10 or earlier. The source bundle does not identify affected CPEs or broader product names. Sites not using this plugin are not indicated as affected.
Exploitation context
The vulnerability can be initiated remotely, but the CVSS vector indicates authentication is required. KEV is false in the supplied data, and no cited source states active exploitation. Public details identify affected parameters but do not provide complete processing context.
Researcher notes
Evidence is specific on affected versions, parameters, weakness class, CVSS, and fixed version. Details are incomplete on whether the XSS is reflected or stored and on exact execution context. Avoid assuming exploit maturity beyond the remote authenticated XSS described by the sources.
Mitigation direction
- Upgrade Mail Subscribe List Plugin to version 2.1 or later.
- Confirm patch 484970ef8285cae51d2de3bd4e4684d33c956c28 is present.
- Disable or remove the plugin if it is unused.
- Check vendor or repository guidance for any additional hardening advice.
Validation and detection
- Inventory WordPress sites for Mail Subscribe List Plugin installations.
- Verify installed plugin versions are not 2.0.10 or earlier.
- Review the patched index.php handling for sml_name and sml_email sanitization.
- Check recent web logs for unusual authenticated submissions to the plugin.
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-2013-10026 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
- 4 (2.0)
- Known Exploited
- No
- Published
Vector: AV:N/AC:L/Au:S/C:N/I:P/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.
AV:N/AC:L/Au:S/C:N/I:P/A:N82.9Primary CVE scoreVulnerability scoring details
Base CVSS 2.0 score
4MediumVector: AV:N/AC:L/Au:S/C:N/I:P/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://vuldb.com/?id.227765CVE reference · vdb-entry, technical-description
- https://vuldb.com/?ctiid.227765CVE reference · signature, permissions-required
- https://github.com/wp-plugins/mail-subscribe-list/commit/484970ef8285cae51d2de3bd4e4684d33c956c28CVE reference · patch
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.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.