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CVE-2026-42354
ANC
Critical

Sentry is an error tracking and performance monitoring tool. From version 21.12.0 to before version 26.4.1, a critical vulnerability was di…

CVSS
9.8
Critical
EPSS
0.01
p45
Published
2026-01-01
Updated
2026-01-01
Description

Sentry is an error tracking and performance monitoring tool. From version 21.12.0 to before version 26.4.1, a critical vulnerability was discovered in the SAML SSO implementation of Sentry. The vulnerability allows an attacker to take over any user account by using a malicious SAML Identity Provider and another organization on the same Sentry instance. The victim email address must be known in order to exploit this vulnerability. This issue has been patched in version 26.4.1.

Tags · CWE
Pre-auth
CWE-290
CAPEC-21
CAPEC-22
CAPEC-59
CAPEC-60
CAPEC-94
CAPEC-459
CAPEC-461
CAPEC-473
CAPEC-476
CAPEC-667
Affected products
Sentry 21.12.0–26.4.1
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Timeline
2026-01-01
Published
2026-01-01
Updated
CVSS 3.1 breakdown
Attack Vector
AV: N
Network (N)
Attack Complexity
AC: L
Low (L)
Privileges Required
PR: N
None (N)
User Interaction
UI: N
None (N)
Scope
S: U
Unchanged (U)
Confidentiality Impact
C: H
High (H)
Integrity Impact
I: H
High (H)
Availability Impact
A: H
High (H)
Exploit indicators
EPSS
0.006 · p45
Known exploited (KEV)
No
MITRE ATT&CK
Inferred via CAPEC
└ via CAPEC-473 · CWE-290
└ via CAPEC-21 · CWE-290
└ via CAPEC-60 · CWE-290
└ via CAPEC-21 · CWE-290
└ via CAPEC-21 · CWE-290
└ via CAPEC-60 · CWE-290
└ via CAPEC-473 · CWE-290
└ via CAPEC-94 · CWE-290
Known exploits — Сканер-ВС
No Сканер-ВС checks registered for this vulnerability yet.
Affected products
ProductVendorStatus
Tracked
sentry*Tracked