# CVE-2026-55081: DHIS2 Reflected XSS in OpenAPI HTML scope parameter

> Attackers can execute arbitrary JavaScript in users' browsers via a crafted OpenAPI URL, potentially leading to session hijacking or data theft.

- **Severity:** High 7.3 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 21 Jul 2026
- **Updated:** 22 Jul 2026
- **Also known as:** GHSA-6785-hj47-c27h

## What is CVE-2026-55081?

CVE-2026-55081 is a high-severity cross-site scripting vulnerability in dhis2-core, published on 21 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

DHIS2 is a flexible information system for data capture, management, validation, analytics and visualization. The DHIS2 OpenAPI HTML endpoint reflected values from the `scope` query parameter into the generated HTML document without sufficient sanitization. A crafted `scope` value could be rendered as active HTML or JavaScript in the OpenAPI documentation page. An attacker able to get a user to open a crafted OpenAPI HTML URL could execute JavaScript in that user's browser in the DHIS2 origin.

Affected versions: DHIS2 2.42 and 2.43 before the 2026-06-09 security patch releases, and the development branch for DHIS2 2.44 before the fix was merged.
Patched in 2.42.5.1, 2.43.0.1, the 2.42 and 2.43 line branches, and the 2.44 development branch.

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

## Which versions are affected by CVE-2026-55081?


## How do I fix CVE-2026-55081?

No fix has been published for CVE-2026-55081 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-55081 being exploited?

There is no known exploitation of CVE-2026-55081 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-55081 and fix it if it is affected.

What it is: CVE-2026-55081 is a high-severity cross-site scripting vulnerability in dhis2-core, published on 21 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-55081 in the wild and no public exploit code.

Affected product: dhis2-core. 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-2026-55081/ (Markdown: https://insights.sbomify.com/CVE-2026-55081/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-55081
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-55081
- OSV: https://osv.dev/vulnerability/CVE-2026-55081

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-55081/
Summaries are generated and may contain mistakes; the official description above is the record.