# CVE-2025-6089: Astun Technology iShare Maps atCheckJS.aspx redirect

> Attackers can exploit an open redirect in iShare Maps to redirect users to malicious sites, potentially facilitating phishing attacks.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 15 Jun 2025
- **Updated:** 16 Jun 2025
- **Also known as:** GHSA-g867-7563-wvhv

## What is CVE-2025-6089?

CVE-2025-6089 is a medium-severity vulnerability in Astun Technology iShare Maps, published on 15 Jun 2025. 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

A vulnerability has been found in Astun Technology iShare Maps 5.4.0 and classified as problematic. This vulnerability affects unknown code of the file atCheckJS.aspx. The manipulation of the argument ref leads to open redirect. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-601 (URL Redirection to Untrusted Site)

## Which versions are affected by CVE-2025-6089?

It affects 1 product.


Products: Astuntechnology Ishare Maps.

## How do I fix CVE-2025-6089?

No fix has been published for CVE-2025-6089 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-6089 being exploited?

There is no known exploitation of CVE-2025-6089 in the wild and no public exploit code.

## Other vulnerabilities in Astun Technology iShare Maps

- [CVE-2025-5377](https://insights.sbomify.com/CVE-2025-5377/): Astun Technology iShare Maps historic1.asp cross site scripting (medium 5.3)
- [CVE-2025-5378](https://insights.sbomify.com/CVE-2025-5378/): Astun Technology iShare Maps mycouncil2.aspx cross site scripting (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-6089 and fix it if it is affected.

What it is: CVE-2025-6089 is a medium-severity vulnerability in Astun Technology iShare Maps, published on 15 Jun 2025. 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-2025-6089 in the wild and no public exploit code.

Affected product: Astun Technology iShare Maps. 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-2025-6089/ (Markdown: https://insights.sbomify.com/CVE-2025-6089/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-6089
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-6089
- OSV: https://osv.dev/vulnerability/CVE-2025-6089

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-6089/
Summaries are generated and may contain mistakes; the official description above is the record.