CVE-2026-78387
Authz bypass in RansomLook /admin/config lets low-privileged users alter app config
Is CVE-2026-78387 being exploited?
Not confirmed. CVE-2026-78387 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 0.35% probability of exploitation in the next 30 days.
How severe is CVE-2026-78387?
CVE-2026-78387 is rated Critical with a CVSS score of 9.4. 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-2026-78387?
Yes. A fix has been recorded for CVE-2026-78387. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-78387 affect?
CVE-2026-78387 affects RansomLook web application, /admin/config endpoint, config/generic.json. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-78387?
Install vendor patch, restrict admin access, and rotate exposed credentials.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated low-privileged users can modify config (LDAP/SMTP, notifications, secrets), redirect integrations, alter auth, disrupt services or cause DoS.
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.