# CVE-2026-12559: Cross-site scripting in Vendor Invoice Management for SAP Solutions

> Stored XSS in OpenText Vendor Invoice Management allows attackers to execute unauthorized scripts in user browsers, compromising data confidentiality and integrity.

- **Severity:** High 7.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H/E:U/S:N/AU:N/R:U/V:D/RE:M/U:Red`)
- **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:** 24 Sep 2026
- **Updated:** 24 Sep 2026
- **Also known as:** GHSA-gmqc-8252-pqjp

## What is CVE-2026-12559?

CVE-2026-12559 is a high-severity cross-site scripting vulnerability in OpenText Vendor Invoice Management for SAP Solutions, published on 24 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

A Stored Cross-Site Scripting (XSS) vulnerability has been identified in OpenText Vendor Invoice Management for SAP Solutions Capture Validation application. Under certain conditions, this issue could allow execution of unauthorized script content in a user's browser, potentially impacting confidentiality and integrity of information processed through the application.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-12559?


## How do I fix CVE-2026-12559?

No fix has been published for CVE-2026-12559 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-12559 being exploited?

There is no known exploitation of CVE-2026-12559 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-12559 and fix it if it is affected.

What it is: CVE-2026-12559 is a high-severity cross-site scripting vulnerability in OpenText Vendor Invoice Management for SAP Solutions, published on 24 Sep 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-2026-12559 in the wild and no public exploit code.

Affected product: OpenText Vendor Invoice Management for SAP Solutions. 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-2026-12559/ (Markdown: https://insights.sbomify.com/CVE-2026-12559/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-12559
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-12559
- OSV: https://osv.dev/vulnerability/CVE-2026-12559

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-12559/
Summaries are generated and may contain mistakes; the official description above is the record.