# CVE-2026-72760: cti-transmute Following List Exposes User Email Addresses to Authenticated Users

> Authenticated attackers can collect user email addresses via the following list endpoint in MISP cti-transmute.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Aug 2026
- **Updated:** 10 Aug 2026
- **Also known as:** GHSA-w385-33fw-3fww

## What is CVE-2026-72760?

CVE-2026-72760 is a medium-severity vulnerability in MISP cti-transmute, published on 10 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Affected versions of MISP cti-transmute disclose users' email addresses through the account following-list endpoint. When an authenticated user follows another account, get_following() includes the followed user's email field in the API response alongside their name, user ID, and follow date. Because the email address is not required for the functionality and other related user lists omit it, an authenticated attacker could systematically follow users and collect their email addresses. The fix removes user.email from the returned object.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2026-72760?


## How do I fix CVE-2026-72760?

No fix has been published for CVE-2026-72760 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-72760 being exploited?

There is no known exploitation of CVE-2026-72760 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-72760 and fix it if it is affected.

What it is: CVE-2026-72760 is a medium-severity vulnerability in MISP cti-transmute, published on 10 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-72760 in the wild and no public exploit code.

Affected product: MISP cti-transmute. 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-2026-72760/ (Markdown: https://insights.sbomify.com/CVE-2026-72760/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-72760
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-72760
- OSV: https://osv.dev/vulnerability/CVE-2026-72760

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-72760/
Summaries are generated and may contain mistakes; the official description above is the record.