# CVE-2026-112041: diem-project diem dmString.php random weak prng

> Remote attackers can exploit a weak random number generator in diem to potentially bypass security controls, though high complexity limits immediate risk.

- **Severity:** Medium 6.3 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Oct 2026
- **Updated:** 19 Oct 2026
- **Also known as:** GHSA-4wx9-wcq2-pggj

## What is CVE-2026-112041?

CVE-2026-112041 is a medium-severity vulnerability in diem-project diem, published on 19 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was identified in diem-project diem up to 116974edfb9a5b8bd69cb13586dc62bcdbb485ad. This vulnerability affects the function dmString::random of the file dmCorePlugin/lib/basic/dmString.php. Such manipulation leads to cryptographically weak prng. The attack may be performed from remote. A high complexity level is associated with this attack. It is stated that the exploitability is difficult. The exploit is publicly available and might be used. This product utilizes a rolling release system for continuous delivery, and as such, version information for affected or updated releases is not disclosed. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-338 (Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)), CWE-331 (Insufficient Entropy)

## Which versions are affected by CVE-2026-112041?


## How do I fix CVE-2026-112041?

No fix has been published for CVE-2026-112041 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-112041 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-112041 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-112041 and fix it if it is affected.

What it is: CVE-2026-112041 is a medium-severity vulnerability in diem-project diem, published on 19 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-112041 exists.

Affected product: diem-project diem. 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-2026-112041/ (Markdown: https://insights.sbomify.com/CVE-2026-112041/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-112041
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-112041
- OSV: https://osv.dev/vulnerability/CVE-2026-112041

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-112041/
Summaries are generated and may contain mistakes; the official description above is the record.