CVE-2022-4993
Template-injection in HTML::FormHandler enables method dispatch, RCE and memory exhaustion.
Is CVE-2022-4993 being exploited?
Not confirmed. CVE-2022-4993 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.49% probability of exploitation in the next 30 days.
How severe is CVE-2022-4993?
CVE-2022-4993 is rated Critical with a CVSS score of 9.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2022-4993?
Yes. A fix has been recorded for CVE-2022-4993. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2022-4993 affect?
CVE-2022-4993 affects HTML::FormHandler <= 0.40068 (Perl), Perl web applications using type constraints/transforms and I18N maketext. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2022-4993?
Upgrade HTML::FormHandler to a patched release; sanitize inputs and restrict language-handle methods.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attacker-controlled form input can invoke language-handle methods (RCE), trigger unhandled exceptions, or allocate arbitrary memory (DoS).
Immediate action required