# CVE-2025-5136: Tmall Demo Payment Identifier pay random values

> Attackers can predict payment identifiers due to insufficient randomness, potentially bypassing security checks in the Tmall Demo application.

- **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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 May 2025
- **Updated:** 28 May 2025
- **Also known as:** GHSA-vwr5-vc8h-j5xm

## What is CVE-2025-5136?

CVE-2025-5136 is a medium-severity vulnerability in Tmall Demo, published on 24 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability, which was classified as problematic, was found in Tmall Demo up to 20250505. This affects an unknown part of the file /tmall/order/pay/ of the component Payment Identifier Handler. The manipulation leads to insufficiently random values. It is possible to initiate the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-330 (Use of Insufficiently Random Values), CWE-310

## Which versions are affected by CVE-2025-5136?

It affects 1 product.


Products: Project Team Tmall Demo.

## How do I fix CVE-2025-5136?

No fix has been published for CVE-2025-5136 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-5136 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-5136 exists.

## Other vulnerabilities in Tmall Demo

- [CVE-2024-40554](https://insights.sbomify.com/CVE-2024-40554/): Information disclosure in n/a (high 7.5)
- [CVE-2024-40560](https://insights.sbomify.com/CVE-2024-40560/): SQL injection in n/a (high 7.3)
- [CVE-2025-5132](https://insights.sbomify.com/CVE-2025-5132/): Tmall Demo logout cross-site request forgery (medium 5.3)
- [CVE-2025-5133](https://insights.sbomify.com/CVE-2025-5133/): Tmall Demo Search Box cross site scripting (medium 5.3)
- [CVE-2025-1843](https://insights.sbomify.com/CVE-2025-1843/): Mini-Tmall ProductMapper.java select sql injection (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-5136 and fix it if it is affected.

What it is: CVE-2025-5136 is a medium-severity vulnerability in Tmall Demo, published on 24 May 2025. 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-2025-5136 exists.

Affected product: Tmall Demo. 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-2025-5136/ (Markdown: https://insights.sbomify.com/CVE-2025-5136/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-5136
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-5136
- OSV: https://osv.dev/vulnerability/CVE-2025-5136

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-5136/
Summaries are generated and may contain mistakes; the official description above is the record.