CVE-2026-58592
RCE via dangling reference in WASM ESM loader enables arbitrary write in WebContent.
Is CVE-2026-58592 being exploited?
Not confirmed. CVE-2026-58592 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 0.55% probability of exploitation in the next 30 days.
How severe is CVE-2026-58592?
CVE-2026-58592 is rated High with a CVSS score of 8.9. 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-2026-58592?
Not known from our data. No patch reference has been recorded for CVE-2026-58592, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-58592 affect?
CVE-2026-58592 affects Ladybird WebAssembly ESM loader, WebContent process. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-58592?
Patch when released; monitor advisories; apply updates once available.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution in the WebContent process via crafted HTML/ESM WASM import using a dangling host reference.
Immediate action required