Sssd: sssd: authorization bypass via cross-domain username collision in hbac evaluation
Products / packages Red Hat Enterprise Linux 10 · Red Hat Enterprise Linux 6 · Red Hat Enterprise Linux 7 · 4 more
Published
Severity and exploitation
KEV coverage does not rule out exploitation.
Assessment vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:NSeverity
medium6.8CVSS measures technical severity, not the likelihood of an attack.
Known exploitation
Not listed in the checked CISA KEV catalog
Absence from CISA KEV does not rule out attacks.
Public exploit
Exploit reference published
Source-linked evidence; not proof of attacks in the wild or independent validation.
Remediation
Source guidance available
Review the recorded instructions. Guidance may be a workaround rather than a fixed version.
What this means
A flaw in SSSD allows an authenticated user in a trusted domain to bypass access policies by sharing the same username as an authorized local account. This affects Red Hat Enterprise Linux versions 7, 8, 9, and 10. The weakness is due to comparison using wrong factors.
Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.Attack conditions
No attack-condition excerpt has been identified here. Review the full source description and references for authentication, network access, and configuration requirements.
Review supporting sources →Affected versions
Check the exact model, release, and any platform requirements against your installation.
Red Hat · redhat
Red Hat Enterprise Linux 10
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Red Hat · redhat
Red Hat Enterprise Linux 10
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Other versions: affected
Product identifiers (CPE)
cpe:/a:redhat:enterprise_linux:10Red Hat · redhat
Red Hat Enterprise Linux 6
0 ranges
Red Hat · redhat
Red Hat Enterprise Linux 6
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Other versions: unknown
Product identifiers (CPE)
cpe:/o:redhat:rhel_els:6Red Hat · redhat
Red Hat Enterprise Linux 7
0 ranges
Red Hat · redhat
Red Hat Enterprise Linux 7
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Other versions: affected
Product identifiers (CPE)
cpe:/o:redhat:rhel_els:7Red Hat · redhat
Red Hat Enterprise Linux 8
0 ranges
Red Hat · redhat
Red Hat Enterprise Linux 8
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Other versions: affected
Product identifiers (CPE)
cpe:/a:redhat:enterprise_linux:8Red Hat · redhat
Red Hat Enterprise Linux 9
0 ranges
Red Hat · redhat
Red Hat Enterprise Linux 9
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Other versions: affected
Product identifiers (CPE)
cpe:/a:redhat:enterprise_linux:9Red Hat · redhat
Red Hat OpenShift Container Platform 4
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Red Hat · redhat
Red Hat OpenShift Container Platform 4
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Other versions: affected
Product identifiers (CPE)
cpe:/a:redhat:openshift:4Red Hat · redhat
Red Hat OpenShift Container Platform 4
0 ranges
Red Hat · redhat
Red Hat OpenShift Container Platform 4
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Other versions: affected
Product identifiers (CPE)
cpe:/a:redhat:openshift:4Red Hat · redhat
Red Hat OpenShift Container Platform 5
0 ranges
Red Hat · redhat
Red Hat OpenShift Container Platform 5
Compare with this publisher’s ranges. This does not inspect your installation.
Other versions: affected
Product identifiers (CPE)
cpe:/a:redhat:openshift:5What to do
Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
cve.new guidance unless attributed to a publisher. This page does not inspect your installation.
Public exploit evidence
The sources identify public exploit references. We have not independently tested them; their availability does not establish exploitation in the wild.
bugzilla.redhat.com/show_bug.cgi ↗Attributed to CISA-ADPOriginal source description
Read the full publisher 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.
References
2 sourcesInside the record
Evidence available
Describes the evidence in this view, not whether the product is safe.
Original records
CVE-2026-104048View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.
cve.new JSON →Contributing organizations · 2
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Timeline
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Source updated
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Last imported by cve.new
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What changed
Follow changesLarge field values are marked as truncated previews. Original source snapshots remain retained.