What is CVE-2026-6990?

CVE-2026-6990 is a low-severity vulnerability in Projeto-Siga Siga, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2026-04-25.

How severe is CVE-2026-6990?

Low severity. CVSS v3 base score is 3.5 out of 10.

RCE in Projeto-Siga Siga

CVE-2026-6990

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (16.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.

Affected products

Projeto-siga Siga — versions 11.0.3.18

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (issue-tracking)
cna@vuldb.com (exploit)
cna@vuldb.com (product)

Frequently asked questions

What is CVE-2026-6990?: CVE-2026-6990 is a low-severity vulnerability in Projeto-Siga Siga, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2026-04-25.
How severe is CVE-2026-6990?: Low severity. CVSS v3 base score is 3.5 out of 10.