CVE-2026-78391
Stored XSS in RansomLook wallet view allows attacker JS execution via crafted crypto addresses.
Is CVE-2026-78391 being exploited?
Not confirmed. CVE-2026-78391 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 0.26% probability of exploitation in the next 30 days.
How severe is CVE-2026-78391?
CVE-2026-78391 is rated High with a CVSS score of 8.8. 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-2026-78391?
Yes. A fix has been recorded for CVE-2026-78391. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-78391 affect?
CVE-2026-78391 affects RansomLook web application, RansomLook wallet detail view, CSV export frontend handler. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-78391?
Apply vendor patch; validate crypto inputs; remove inline JS handlers.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Stored XSS executes attacker-controlled JavaScript in users' browsers, enabling data theft and actions as the user; may be exploitable without auth via poisoned external feed.
Immediate action required
- affected<= 2.0.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.