CVE-2021-24760
Published: 18 October 2021
Summary
CVE-2021-24760 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Pdf Viewer Block For Gutenberg Project Pdf Viewer Block For Gutenberg. Its CVSS base score is 5.4 (Medium).
Operationally, ranked at the 39.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-11672
Vulnerability details
The Gutenberg PDF Viewer Block WordPress plugin before 1.0.1 does not sanitise and escape its block, which could allow users with a role as low as Contributor to perform Cross-Site Scripting attacks.
- 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.