CVE-2026-78381
Path traversal in RansomLook GroupPost.get exposes arbitrary files
Is CVE-2026-78381 being exploited?
Not confirmed. CVE-2026-78381 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 0.39% probability of exploitation in the next 30 days.
How severe is CVE-2026-78381?
CVE-2026-78381 is rated High with a CVSS score of 8.2. 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-2026-78381?
Yes. A fix has been recorded for CVE-2026-78381. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-78381 affect?
CVE-2026-78381 affects RansomLook server, GroupPost.get API, Instances importing remote posts. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-78381?
Apply vendor patch; validate/realpath screen inputs and restrict file reads
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Arbitrary file read via API path traversal, exposing configs, API keys, password hashes and other secrets to a remote attacker controlling imported posts.
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.