CVE-2023-39062
Published: 28 August 2023
Summary
CVE-2023-39062 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Html2Pdf Project Html2Pdf. Its CVSS base score is 6.1 (Medium).
Operationally, ranked in the top 2.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CVE-2023-39062 is a cross-site scripting vulnerability (CWE-79) affecting Spipu HTML2PDF versions prior to 5.2.8. The flaw resides in forms.php and permits a remote attacker to supply a crafted script that executes in the context of a victim's browser when the page is rendered.
An unauthenticated attacker can exploit the issue over the network by delivering a malicious payload that triggers when a user interacts with the affected component. Successful exploitation yields limited impacts on confidentiality and integrity with no availability effect, while the CVSS scope change indicates the attack can affect resources beyond the vulnerable application itself.
Project references, including the HTML2PDF changelog, indicate that the issue was addressed by the 5.2.8 release. The EPSS score has remained flat at its observed peak of 0.3546 with no material upward trajectory after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-2254
Vulnerability details
Cross Site Scripting vulnerability in Spipu HTML2PDF before v.5.2.8 allows a remote attacker to execute arbitrary code via a crafted script to the forms.php.
- 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.