Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in neville.lugton bpmn.io bpmnio allows Stored XSS.This issue affects bpmn.io: from n/a through <= 1.0.
Security readout for executives and security teams
Plain-English summary
CVE-2024-51577 is a stored cross-site scripting issue in the WordPress bpmn.io plugin, affecting versions through 1.0. An authenticated user could save malicious content that later runs in another user’s browser. Business risk is moderate, mainly impacting WordPress sites using this plugin and involving account compromise or content tampering scenarios.
Executive priority
Treat as a targeted WordPress hygiene issue, not an emergency unless the plugin is deployed on important public sites. Prioritize inventory, exposure confirmation, and removal or restriction where no vendor fix is available.
Technical view
The issue is CWE-79 improper neutralization during page generation in neville.lugton bpmn.io / bpmnio. CVSS 3.1 is 6.5: network exploitable, low complexity, low privileges required, user interaction required, scope changed, with low confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to WordPress installations with the bpmn.io / bpmnio plugin installed at version 1.0 or earlier. Sites not using this plugin are not affected based on the provided sources.
Exploitation context
The source bundle does not indicate active exploitation, and the CVE is not listed as KEV. Exploitation requires a logged-in attacker and a victim interaction, such as viewing stored plugin-related content in WordPress.
Researcher notes
Evidence is limited to CVE and Patchstack-style vulnerability metadata. No public exploit status, fixed version, or detailed affected configuration is provided in the bundle. Avoid assuming broader WordPress impact beyond the named bpmn.io / bpmnio plugin through version 1.0.
Mitigation direction
Inventory WordPress sites for the bpmn.io / bpmnio plugin.
If installed at version 1.0 or earlier, check vendor or Patchstack guidance.
Disable or remove the plugin if it is not business-critical.
Restrict plugin-related content editing to trusted users only.
Monitor WordPress administrator sessions and unexpected content changes.
Validation and detection
Confirm whether the bpmn.io / bpmnio plugin is installed.
Record the installed plugin version on each WordPress site.
Review user roles allowed to create or edit plugin content.
Check security advisories for a fixed version or vendor guidance.
Review logs for suspicious edits by low-privileged users.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
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 · medium confidence lookup
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.
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.
We 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.