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SimpleSAMLphp HTTP-Artifact TLS validator confusion allows cross-IdP authentication bypass

🗓️ 02 Jul 2026 20:25:56Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 54 Views

SimpleSAMLphp HTTP-Artifact flow permits cross identity provider authentication bypass due to TLS validator misuse.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-49283
19 Aug 202614:47
–cve
cvelist
Cvelist
CVE-2026-49283 SimpleSAMLphp HTTP-Artifact TLS validator confusion allows cross-IdP authentication bypass
19 Aug 202614:47
–cvelist
debiancve
Debian CVE
CVE-2026-49283
19 Aug 202614:47
–debiancve
euvd
EUVD
EUVD-2026-62502
19 Aug 202614:47
–euvd
kitploit
Kitploit
security-research
19 Oct 202619:35
–kitploit
mend
Mend
CVE-2026-49283
19 Aug 202614:47
–mend
nvd
NVD
CVE-2026-49283
19 Aug 202615:17
–nvd
osv_debian
osv_debian
DEBIAN-CVE-2026-49283
19 Aug 202615:17
–osv_debian
osv_ghsa
osv_ghsa
GHSA-6929-8P9F-26JX SimpleSAMLphp HTTP-Artifact TLS validator confusion allows cross-IdP authentication bypass
2 Jul 202620:25
–osv_ghsa
osv_ubuntu
osv_ubuntu
UBUNTU-CVE-2026-49283
19 Aug 202615:17
–osv_ubuntu
Rows per page
Vulners
Node
OR
simplesamlphpsaml2-legacyRange<4.19.3composer
simplesamlphpsaml2Range<4.19.3composer
simplesamlphpsaml2-legacyRange4.20.0–4.20.2composer
simplesamlphpsaml2Range4.20.0–4.20.2composer
simplesamlphpsaml2Range5.0.0–5.0.6composer
simplesamlphpsaml2Range6.0.0–6.2.1composer

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04 Aug 2026 21:25Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.18.7
EPSS0.00472
SSVC
54