# CVE-2026-85177: CRMEB through 6.0.0 Unauthorized Message Modification via edit_message

> Authenticated users can modify arbitrary system inbox messages due to missing ownership validation, allowing unauthorized deletion or reassignment of notifications.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/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:** 3 Sep 2026
- **Updated:** 24 Sep 2026
- **Also known as:** GHSA-c94f-pm78-6rh7

## What is CVE-2026-85177?

CVE-2026-85177 is a medium-severity missing authorization vulnerability in CRMEB, published on 3 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

CRMEB through 6.0.0 fails to validate message ownership in the edit_message handler of MessageSystemController.php, allowing authenticated users to modify arbitrary system inbox messages. Attackers can update any message's columns including is_del, look, and uid to delete, mark read, or reassign victim notifications without authorization.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-85177?


## How do I fix CVE-2026-85177?

No fix has been published for CVE-2026-85177 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-85177 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85177 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-85177 and fix it if it is affected.

What it is: CVE-2026-85177 is a medium-severity missing authorization vulnerability in CRMEB, published on 3 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85177 exists.

Affected product: CRMEB. 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-2026-85177/ (Markdown: https://insights.sbomify.com/CVE-2026-85177/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-85177
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-85177
- OSV: https://osv.dev/vulnerability/CVE-2026-85177

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-85177/
Summaries are generated and may contain mistakes; the official description above is the record.