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Vulnerability record · CVE-2026-90996 · published 14 September 2026

CVE-2026-90996: Fedoraproject sssd vulnerability

Fedoraproject · Sssd

A flaw was found in sssd. A local unprivileged user could send a specially crafted request with a zero-length body to the Network Security Services (NSS) responder. This could lead to a denial-of-service condition, causing the NSS responder to become unstable or terminate. This vulnerability affects the availability of the system responder.

5.5 CVSS 3.1 Medium EPSS 0.13% · top 97.8% CWE-191 · CWE-191
5.5CVSS 3.1 base score
0.13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
2References, 1 tagged exploit
7 Oct 2026Last modified by NVD

Description

A flaw was found in sssd. A local unprivileged user could send a specially crafted request with a zero-length body to the Network Security Services (NSS) responder. This could lead to a denial-of-service condition, causing the NSS responder to become unstable or terminate. This vulnerability affects the availability of the system responder.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/security/cve/CVE-2026-90996 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2478986 ExploitIssue TrackingMitigationVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-90996), CISA KEV, FIRST EPSS (scores of 2026-10-09). This page is refreshed as NVD updates the record.