Security readout for executives and security teams
Plain-English summary
This is a cross-site scripting flaw in the WordPress Simplr Registration Form Plus+ plugin. Affected versions 2.3.0 through 2.3.4 may allow a remote authenticated attacker to affect page integrity. The published fix is version 2.3.5.
Executive priority
Treat this as a routine but real web application integrity risk. Prioritize remediation where the plugin is internet-facing or used by many authenticated users. It is not supported by the supplied evidence as an emergency active-exploitation issue.
Technical view
CVE-2015-10107 is CWE-79 XSS in Simplr Registration Form Plus+ up to 2.3.4. Sources do not identify the exact vulnerable processing path. CVSS v2 is 4.0 with AV:N/AC:L/Au:S/C:N/I:P/A:N, indicating network reachability, low complexity, required authentication, partial integrity impact, and no confidentiality or availability impact.
Likely exposure
Exposure is limited to WordPress sites running Simplr Registration Form Plus+ versions 2.3.0, 2.3.1, 2.3.2, 2.3.3, or 2.3.4. Sites without this plugin, or already on 2.3.5 or later, are not identified as affected by the supplied sources.
Exploitation context
The source bundle states the attack may be initiated remotely, but the CVSS vector requires single authentication. CISA KEV status is false, and no provided source claims active exploitation. Evidence does not confirm public exploit availability or the exact attacker role needed.
Researcher notes
The public record is sparse: VulDB describes XSS in unknown processing, and the patch identifier is d588446844dd49232ab400ef213ff5b92121c33e. Do not assume unauthenticated exploitation; the provided CVSS vector says Au:S. Validate exposure by version rather than by speculative request behavior.
Mitigation direction
- Upgrade Simplr Registration Form Plus+ to version 2.3.5 or later.
- Confirm no production WordPress site remains on versions 2.3.0 through 2.3.4.
- Use the referenced patch commit as evidence, but prefer packaged 2.3.5 where available.
- If upgrade is not feasible, check plugin or vendor guidance before selecting compensating controls.
Validation and detection
- Inventory WordPress sites for the Simplr Registration Form Plus+ plugin.
- Record the installed plugin version on each site.
- Verify upgraded sites report version 2.3.5 or later.
- Confirm registration-related pages still function after the upgrade.
- Document whether authenticated users can access affected registration workflows.
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-2015-10107 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.230153CVE reference · vdb-entry, technical-description
- https://vuldb.com/?ctiid.230153CVE reference · signature, permissions-required
- https://github.com/wp-plugins/simplr-registration-form/commit/d588446844dd49232ab400ef213ff5b92121c33eCVE 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.