# CVE-2019-17151: Open redirect in WeChat

> Remote attackers can redirect users to external resources via improper profile name validation, potentially leading to code execution when combined with other flaws.

- **Severity:** Medium 4.3 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 7 Jan 2020
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-92mc-7g43-2wj6

## What is CVE-2019-17151?

CVE-2019-17151 is a medium-severity vulnerability in Tencent WeChat, published on 7 Jan 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

This vulnerability allows remote attackers redirect users to an external resource on affected installations of Tencent WeChat Prior to 7.0.9. User interaction is required to exploit this vulnerability in that the target must be within a chat session together with the attacker. The specific flaw exists within the parsing of a users profile. The issue lies in the failure to properly validate a users name. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process. Was ZDI-CAN-9302.

Weakness: CWE-601 (URL Redirection to Untrusted Site), CWE-356 (Missing User Interaction for Potentially Unsafe Action)

## Which versions are affected by CVE-2019-17151?

It affects 1 product.


Products: Tencent Wechat.

## How do I fix CVE-2019-17151?

No fix has been published for CVE-2019-17151 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-17151 being exploited?

There is no known exploitation of CVE-2019-17151 in the wild and no public exploit code.

## Other vulnerabilities in Tencent WeChat

- [CVE-2024-40433](https://insights.sbomify.com/CVE-2024-40433/): Privilege escalation in n/a (high 8.8)
- [CVE-2020-27874](https://insights.sbomify.com/CVE-2020-27874/): Memory corruption in WeChat (high 8.8)
- [CVE-2021-40180](https://insights.sbomify.com/CVE-2021-40180/): Information disclosure in n/a (high 7.5)
- [CVE-2021-27247](https://insights.sbomify.com/CVE-2021-27247/): Information disclosure in WeChat (medium 6.5)
- [CVE-2019-11419](https://insights.sbomify.com/CVE-2019-11419/): Null dereference in n/a (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-17151 and fix it if it is affected.

What it is: CVE-2019-17151 is a medium-severity vulnerability in Tencent WeChat, published on 7 Jan 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-17151 in the wild and no public exploit code.

Affected product: Tencent WeChat. 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-2019-17151/ (Markdown: https://insights.sbomify.com/CVE-2019-17151/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-17151
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-17151
- OSV: https://osv.dev/vulnerability/CVE-2019-17151

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-17151/
Summaries are generated and may contain mistakes; the official description above is the record.