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CVE-2026-42177

🗓️ 12 May 2026 17:11:36Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 34 Views🌐 WEB

CVE-2026-42177: Entra SSO extension leaks Primary Refresh Token cookie to attacker hosts due to broad host permissions; fixed in 1.8.1.

Related
Detection
Affected
Refs
Paths
ReporterTitlePublishedViews
Family
githubexploit
GithubExploit
linux-entra-sso-PoC
3 Sep 202607:46
githubexploit
attackerkb
ATTACKERKB
CVE-2026-42177
12 May 202617:11
attackerkb
cnnvd
CNNVD
Entra ID SSO via Microsoft Identity Broker on Linux 访问控制错误漏洞
12 May 202600:00
cnnvd
cvelist
Cvelist
CVE-2026-42177 linux-entra-sso: PRT SSO cookie can leak to attacker-controlled hosts when broad host permissions are granted
12 May 202617:11
cvelist
debiancve
Debian CVE
CVE-2026-42177
12 May 202617:11
debiancve
euvd
EUVD
EUVD-2026-29703
12 May 202617:11
euvd
nvd
NVD
CVE-2026-42177
12 May 202618:17
nvd
osv
OSV
DEBIAN-CVE-2026-42177
12 May 202618:17
osv
osv
OSV
UBUNTU-CVE-2026-42177
12 May 202618:17
osv
ptsecurity
Positive Technologies
PT-2026-40252
12 May 202600:00
ptsecurity
Rows per page
Vulners
[
  {
    "vendor": "siemens",
    "product": "linux-entra-sso",
    "versions": [
      {
        "version": "< 1.8.1",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
phishpathlogin.microsoftonline.com.attacker.example/phishBypass of startsWith check due to missing trailing slash on SSO URL allows injection of SSO cookie into attacker-controlled domainCWE-284CWE-436

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17 Jun 2026 10:47Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.15.3
EPSS0.00234
SSVC
34