CVE-2022-26842
Published: 22 August 2022
Summary
CVE-2022-26842 is a critical-severity Cross-site Scripting (CWE-79) vulnerability in Wwbn Avideo. Its CVSS base score is 9.6 (Critical).
Operationally, ranked in the top 7.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
A reflected cross-site scripting vulnerability exists in the charts tab selection functionality of WWBN AVideo version 11.6 and the development master commit 3f7c0364. The flaw, tracked as CWE-79, allows a specially crafted HTTP request to trigger arbitrary JavaScript execution in the context of an affected user session. It carries a CVSS 3.1 score of 9.6, reflecting network attack vector, low complexity, and impacts across confidentiality, integrity, and availability when chained through a victim browser.
An unauthenticated attacker can exploit the issue by crafting a malicious link or request and inducing an authenticated user to interact with it, resulting in JavaScript execution under that user's privileges. Successful exploitation can lead to session hijacking, data theft, or further actions within the AVideo application on behalf of the victim.
Public references point to a Talos Intelligence advisory (TALOS-2022-1537) detailing the flaw and to database migration scripts in updateDb.v12.0.sql that address the affected code paths, indicating that upgrading to version 12.0 or later constitutes the primary remediation.
EPSS scores have remained near 0.09 with only minor fluctuation between the current value of 0.0945 and a peak of 0.0987, providing no indication of rising exploitation interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-31392
Vulnerability details
A reflected cross-site scripting (xss) vulnerability exists in the charts tab selection functionality of WWBN AVideo 11.6 and dev master commit 3f7c0364. A specially-crafted HTTP request can lead to arbitrary Javascript execution. An attacker can get an authenticated user to…
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send a crafted HTTP request to trigger this vulnerability.
- 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.