CVE-2024-11387
Published: 23 November 2024
Summary
CVE-2024-11387 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Wordpress (inferred from references). Its CVSS base score is 6.4 (Medium).
Operationally, ranked in the top 7.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
The Easy Liveblogs plugin for WordPress is affected by a stored cross-site scripting vulnerability (CWE-79) in all versions through 2.3.5. The flaw resides in the elb_liveblog shortcode, which fails to adequately sanitize and escape user-supplied attributes before storing and rendering them on pages.
Authenticated attackers holding contributor-level privileges or higher can supply malicious attributes to the shortcode, causing arbitrary scripts to be persisted and later executed in the browsers of any user who views the affected content. The issue carries a CVSS 3.1 score of 6.4 with network attack vector, low complexity, and changed scope.
The referenced WordPress plugin changeset documents the code revision that addresses the input handling and escaping deficiencies; site administrators should apply the update or remove the plugin to eliminate the exposure. Wordfence threat intelligence entries further detail the affected versions and recommended remediation steps.
EPSS scores rose from lower values at disclosure to a recorded peak of 0.1078 before receding to the current 0.0774, indicating a measurable increase in observed exploitation interest after public release.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-33789
Vulnerability details
The Easy Liveblogs plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'elb_liveblog' shortcode in all versions up to, and including, 2.3.5 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it…
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possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.