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.
- 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
- None listed
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
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.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-55081 being exploited?
There is no known exploitation of CVE-2026-55081 in the wild and no public exploit code.
Sources
Also known as GHSA-6785-hj47-c27h.