# CVE-2025-66486: Multiple vulnerabilities have been addressed in IBM Aspera Shares

> Remote attackers can inject malicious HTML into IBM Aspera Shares, leading to script execution in victims' browsers within the site's security context.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 1 Apr 2026
- **Updated:** 3 Apr 2026
- **Also known as:** GHSA-25px-gj7m-w9m3

## What is CVE-2025-66486?

CVE-2025-66486 is a medium-severity cross-site scripting vulnerability in IBM Aspera Shares, published on 1 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

IBM Aspera Shares 1.9.9 through 1.11.0 is vulnerable to HTML injection. A remote attacker could inject malicious HTML code, which when viewed, would be executed in the victim's Web browser within the security context of the hosting site.

Weakness: CWE-80 (Improper Neutralization of Script-Related HTML Tags in a Web Page)

## Which versions are affected by CVE-2025-66486?

It affects 1 product.


Products: Ibm Aspera Shares.

## How do I fix CVE-2025-66486?

No fix has been published for CVE-2025-66486 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-66486 being exploited?

There is no known exploitation of CVE-2025-66486 in the wild and no public exploit code.

## Other vulnerabilities in IBM Aspera Shares

- [CVE-2025-0162](https://insights.sbomify.com/CVE-2025-0162/): IBM Aspera Shares XML external entity injection (high 7.1)
- [CVE-2024-56472](https://insights.sbomify.com/CVE-2024-56472/): IBM Aspera Shares Cross-Site Scripting (medium 6.4)
- [CVE-2025-66483](https://insights.sbomify.com/CVE-2025-66483/): Multiple vulnerabilities have been addressed in IBM Aspera Shares (medium 6.3)
- [CVE-2024-38315](https://insights.sbomify.com/CVE-2024-38315/): IBM Aspera Shares session fixation (medium 6.3)
- [CVE-2023-38018](https://insights.sbomify.com/CVE-2023-38018/): IBM Aspera Shares session fixation (medium 6.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-66486 and fix it if it is affected.

What it is: CVE-2025-66486 is a medium-severity cross-site scripting vulnerability in IBM Aspera Shares, published on 1 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-66486 in the wild and no public exploit code.

Affected product: IBM Aspera Shares. 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-2025-66486/ (Markdown: https://insights.sbomify.com/CVE-2025-66486/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-66486
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-66486
- OSV: https://osv.dev/vulnerability/CVE-2025-66486

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-66486/
Summaries are generated and may contain mistakes; the official description above is the record.