CVE-2026-86274 projeto-siga Authentication Flow ExAutenticacaoController.java ExAutenticacaoController.autenticar authorization
Attackers can bypass authentication in the Siga application by manipulating the cod/jwt argument in the ExAutenticacaoController, allowing unauthorized access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-86274?
CVE-2026-86274 is a medium-severity missing authorization vulnerability in projeto-siga siga, published on 7 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A security vulnerability has been detected in projeto-siga siga up to 11.0.2.10/11.0.2.13/11.1.1. This affects the function ExAutenticacaoController.autenticar of the file sigaex/src/main/java/br/gov/jfrj/siga/vraptor/ExAutenticacaoController.java of the component Authentication Flow. Such manipulation of the argument cod/jwt leads to missing authorization. The attack may be launched remotely. The exploit has been disclosed publicly and may 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-2026-86274?
How do I fix CVE-2026-86274?
No fix has been published for CVE-2026-86274 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-86274 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86274 exists.
Sources
Also known as GHSA-92g4-p7r6-w4j8.