# CVE-2026-78380: Private Group and Market Posts Disclosed Through Public Notification Channels in RansomLook

> RansomLook leaks private ransomware group and market victim data to public notification channels and MISP feeds due to missing privacy checks.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Aug 2026
- **Updated:** 24 Aug 2026
- **Also known as:** GHSA-786f-jc54-f7f4

## What is CVE-2026-78380?

CVE-2026-78380 is a high-severity vulnerability in ransomlook, published on 24 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

RansomLook fails to enforce the privacy status of ransomware groups and markets when distributing newly collected victim posts to external notification channels. The post-processing logic checks whether an individual post is marked private but does not verify whether the group or market to which the post belongs is configured as private.

As a result, newly parsed victim information associated with a private group or market may be automatically published through enabled Rocket.Chat, Mastodon, Bluesky, and e-mail notification channels despite the entity being explicitly configured to prevent public disclosure.

A similar issue affects the public MISP feed. The feed previously determined privacy using groupinfo(), which only queries the group database. Consequently, victim information associated with private markets could be added to the public MISP feed because the corresponding market privacy flag was not evaluated.

An attacker or other unauthorized party able to access these public notification channels or the MISP feed may obtain victim information that was intended to remain private. Depending on the collected data, this may disclose victim names, ransomware activity, incident information, or other information associated with privately monitored groups and markets.

The fix introduces a common is_private_entity() check covering both groups and markets and prevents private entity posts from being distributed through external notification channels or the public MISP feed. Internal storage and dashboard alerting remain unaffected.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-78380?


## How do I fix CVE-2026-78380?

No fix has been published for CVE-2026-78380 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-78380 being exploited?

There is no known exploitation of CVE-2026-78380 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-78380 and fix it if it is affected.

What it is: CVE-2026-78380 is a high-severity vulnerability in ransomlook, published on 24 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-78380 in the wild and no public exploit code.

Affected product: ransomlook. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-78380/ (Markdown: https://insights.sbomify.com/CVE-2026-78380/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-78380
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-78380
- OSV: https://osv.dev/vulnerability/CVE-2026-78380

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-78380/
Summaries are generated and may contain mistakes; the official description above is the record.