# CVE-2018-25089: glb Meetup Tag Extension Link Attribute reverse tabnabbing

> Attackers can exploit reverse tabnabbing in the glb Meetup Tag Extension to redirect users to malicious sites via window.opener access.

- **Severity:** Low 3.5 (`CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 28 Aug 2023
- **Updated:** 30 Sep 2024
- **Also known as:** GHSA-v6p8-2vxr-r5m4

## What is CVE-2018-25089?

CVE-2018-25089 is a low-severity vulnerability in glb Meetup Tag Extension, published on 28 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability was found in glb Meetup Tag Extension 0.1 on MediaWiki. It has been rated as problematic. This issue affects some unknown processing of the component Link Attribute Handler. The manipulation leads to use of web link to untrusted target with window.opener access. Upgrading to version 0.2 is able to address this issue. The identifier of the patch is 850c726d6bbfe0bf270801fbb92a30babea4155c. It is recommended to upgrade the affected component. The identifier VDB-238157 was assigned to this vulnerability.

Weakness: CWE-1022 (Use of Web Link to Untrusted Target with window.opener Access)

## Which versions are affected by CVE-2018-25089?

It affects 1 product.


Products: Glb Meetup Tag.

## How do I fix CVE-2018-25089?

No fix has been published for CVE-2018-25089 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-25089 being exploited?

There is no known exploitation of CVE-2018-25089 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-25089 and fix it if it is affected.

What it is: CVE-2018-25089 is a low-severity vulnerability in glb Meetup Tag Extension, published on 28 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-25089 in the wild and no public exploit code.

Affected product: glb Meetup Tag Extension. 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-2018-25089/ (Markdown: https://insights.sbomify.com/CVE-2018-25089/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-25089
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-25089
- OSV: https://osv.dev/vulnerability/CVE-2018-25089

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-25089/
Summaries are generated and may contain mistakes; the official description above is the record.