6.1

CVE-2026-104040: fedoraproject sssd Improper Neutralization of Delimiters

CVSS: 6.1v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-104040DEBIAN-CVE-2026-104040
Published 06-10-2026Last modified 06-10-2026
Open JSON

Vulnerability summary

CVE-2026-104040 is a medium (CVSS 6.1) Improper Neutralization of Delimiters vulnerability in fedoraproject sssd. EPSS estimates a 0.10% chance of exploitation in the next 30 days, higher than 0.7% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (NVD)
EPSS score
0.10%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 06-10-2026
    PublishedVulnerability first disclosed.
  2. 06-10-2026
    Last modifiedVulnerability information updated.

Description

A flaw was found in SSSD. When configured with the Entra ID identity provider, input lookup names containing single quotes are not properly escaped before being included in Microsoft Graph Open Data Protocol (OData) queries. A low-privileged local user can exploit this flaw by submitting a crafted search request, altering query filters to broaden user or group searches. This can lead to information disclosure by retrieving unintended directory objects, as well as a Denial of Service (DoS) through excessive processing and cache population.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.10%

Chance of exploitation in the next 30 days

Percentile

1%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

06-10-202621-10-2026
EPSS score
0.10%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugzilla.redhat.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Redhat2 products
Debian1 product
  • sssdAll versions (No fix recorded)
Fedoraproject1 product
Ubuntu1 product
  • sssdAll versions (No fix recorded)

4 vendors · 5 products

References

5 links