CVE-2023-1546
Published: 02 May 2023
Summary
CVE-2023-1546 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Plainviewplugins Mycryptocheckout. Its CVSS base score is 6.1 (Medium).
Operationally, ranked in the top 6.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
The vulnerability is a reflected cross-site scripting flaw (CWE-79) affecting the MyCryptoCheckout WordPress plugin prior to version 2.124. The root cause is insufficient escaping of certain URL values before they are emitted inside HTML attributes, allowing attacker-controlled script to execute in the context of the affected site.
An unauthenticated remote attacker can exploit the issue by supplying a crafted URL that is reflected back to a victim who follows the link. Successful exploitation yields the ability to execute arbitrary JavaScript in the victim's browser, resulting in limited impacts to confidentiality and integrity as reflected by the CVSS vector AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
WPScan advisories for the vulnerability recommend updating the plugin to version 2.124 or later to eliminate the unsanitized URL output. The associated EPSS score rose from a low baseline to a peak of 0.3093 before receding to its current value of 0.1043, indicating a period of increased exploitation interest after public disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-23780
Vulnerability details
The MyCryptoCheckout WordPress plugin before 2.124 does not escape some URLs before outputting them in attributes, leading to Reflected Cross-Site Scripting
- 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.