CVE-2026-6990 projeto-siga novo cross site scripting
Remote attackers can execute arbitrary scripts via the Nome/Descrição field in Projeto Siga, 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-2026-6990?
CVE-2026-6990 is a medium-severity cross-site scripting vulnerability in projeto-siga siga, published on 25 Apr 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
A vulnerability was found in projeto-siga siga 11.0.3.18. The affected element is an unknown function of the file /sigawf/app/responsavel/novo. Performing a manipulation of the argument Nome/Descrição results in cross site scripting. The attack can be initiated remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-6990?
How do I fix CVE-2026-6990?
No fix has been published for CVE-2026-6990 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-2026-6990 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6990 exists.
Sources
Also known as GHSA-54f6-jgjm-5r6h.