← Vulnerability feed

Vulnerability record · CVE-2026-104048 · published 6 October 2026

CVE-2026-104048: Fedoraproject sssd vulnerability

Fedoraproject · Sssd

A flaw was found in SSSD. In trust-enabled identity management environments, SSSD evaluates Host-Based Access Control (HBAC) rules by stripping domain qualifiers and comparing only short usernames. An authenticated user in a trusted domain who shares the same username as an authorized local account can bypass access policies and gain unauthorized access to protected services or hosts.

8.1 CVSS 3.1 High EPSS 0.28% · top 81.3% CWE-1025 · CWE-1025
8.1CVSS 3.1 base score
0.28%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
3References, 2 tagged exploit
9 Oct 2026Last modified by NVD

Description

A flaw was found in SSSD. In trust-enabled identity management environments, SSSD evaluates Host-Based Access Control (HBAC) rules by stripping domain qualifiers and comparing only short usernames. An authenticated user in a trusted domain who shares the same username as an authorized local account can bypass access policies and gain unauthorized access to protected services or hosts.

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

Affected products

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

References

LinkTags
https://access.redhat.com/security/cve/CVE-2026-104048 Vendor AdvisoryIssue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2478613 ExploitIssue TrackingMitigationVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2478613 ExploitIssue TrackingMitigationVendor Advisory

Track CVE-2026-104048 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2019-7609Kibana Timelion visualizer code injection enables remote code executionKibana before 5.6.15 and 6.6.1 contains an arbitrary code execution flaw in the Timelion visualizer. An attacker who can reach the Timelion applicati…KEVEPSS 95%analysed9.9CVE-2019-1003029Jenkins Script Security Plugin sandbox bypass allows code executionThe Jenkins Script Security Plugin 1.53 and earlier fails to properly enforce its Groovy sandbox in GroovySandbox.java and SecureGroovyScript.java, l…KEVEPSS 74%analysed9.9CVE-2019-1003030Jenkins Pipeline Groovy Plugin sandbox bypass allows arbitrary code executionThe Jenkins Pipeline: Groovy Plugin (2.63 and earlier) contains a sandbox bypass in CpsGroovyShell.java. Attackers who can control pipeline scripts c…KEVEPSS 97%analysed9.8CVE-2019-11043PHP-FPM buffer overflow enables remote code executionPHP-FPM in certain configurations writes past allocated buffers into FCGI protocol data space, an out-of-bounds write (CWE-787, CWE-120). It affects …KEVEPSS 100%analysed9.8CVE-2018-1000861Jenkins Stapler framework URL routing allows remote code executionThe Stapler web framework in Jenkins 2.153 and earlier and LTS 2.138.3 and earlier lets attackers invoke unintended Java methods by requesting crafte…KEVEPSS 98%analysed9.8CVE-2018-14667RichFaces Framework EL injection enables unauthenticated remote code executionRichFaces Framework 3.X through 3.3.4 is vulnerable to Expression Language injection through the UserResource resource. A remote, unauthenticated att…KEVEPSS 74%analysed9.8CVE-2014-7169GNU Bash environment variable function parsing command injection (Shellshock variant)GNU Bash through 4.3 bash43-025 processes trailing strings after malformed function definitions in environment variable values, allowing command inje…KEVEPSS 100%analysed9.8CVE-2014-6271GNU Bash environment variable command injection (ShellShock)GNU Bash through 4.3 processes trailing strings after function definitions in environment variable values, allowing injected commands to run when Bas…KEVEPSS 100%analysed

Source: NIST National Vulnerability Database (record CVE-2026-104048), CISA KEV, FIRST EPSS (scores of 2026-10-15). This page is refreshed as NVD updates the record.