Security readout for executives and security teams
Plain-English summary
WP Songbook for WordPress has a reflected cross-site scripting issue through a URL parameter. A victim must interact with a crafted link, but successful exploitation could run attacker-controlled script in the user’s browser under the affected site’s context.
Executive priority
Treat this as a moderate-priority web risk. It is not shown as actively exploited in the provided sources, but public WordPress exposure and administrator interaction risk justify timely remediation or removal.
Technical view
CVE-2021-34655 is CWE-79 reflected XSS in WP Songbook versions up to and including 2.0.11, involving the url parameter in inc/class.ajax.php. CVSS 3.1 is 6.1: network reachable, low complexity, no privileges, user interaction required, changed scope, low confidentiality and integrity impact.
Likely exposure
Public WordPress sites with WP Songbook installed and enabled at version 2.0.11 or earlier are the likely exposure. The bundle does not identify other affected products or CPEs.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires user interaction, typically by getting a user to open a crafted link that reflects script through the vulnerable parameter.
Researcher notes
Evidence points to reflected XSS in the url parameter of inc/class.ajax.php. The bundle provides vulnerability details and references, but does not provide a confirmed fixed version or detailed vendor mitigation. Avoid asserting patch availability beyond cited guidance.
Mitigation direction
- Inventory WordPress sites for WP Songbook versions 2.0.11 or earlier.
- Check Wordfence and WordPress plugin guidance for a fixed version or vendor remediation.
- Update WP Songbook if a vendor-supported safe release is available.
- Disable or remove WP Songbook where no confirmed safe version is available.
- Prioritize controls protecting authenticated administrators and content editors.
Validation and detection
- Confirm whether WP Songbook is installed, enabled, and at version 2.0.11 or earlier.
- Review the referenced plugin file for unsafe handling of the url parameter.
- After remediation, verify the vulnerable plugin version is no longer active.
- Check web and security logs for suspicious requests involving WP Songbook AJAX paths.
- Document whether remediation was update, disablement, removal, or compensating control.
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-2021-34655 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
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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:R/S:C/C:L/I:L/A:N2.82.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34655CVE reference · x_refsource_MISC
- https://plugins.trac.wordpress.org/browser/wp-songbook/tags/2.0.11/inc/class.ajax.php#L21CVE 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.
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.