CVE-2026-102899 Sentry - Authentication Bypass

Sentry 26.5.0 to 26.7.2 contains an authentication bypass caused by SAML SSO identity-linking flow allowing attacker-controlled SAML IdP to link attacker identity to victim account, letting attackers take control of victim accounts, exploit requires victim to open malicious URL with permissive cookie settings.

CVSS base score 7.6 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
14 October 2026
Updated
15 October 2026
Weakness
CWE-287

Vendor fix

Update to version 26.7.2 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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