CVE-2026-42354 Details
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.
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Exploit prediction scoring system (EPSS) score for CVE-2026-42354
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.01 Probability of exploitation activity being observed over the next 30 days (2st percentile)
CVSS score for CVE-2026-42354
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
9.1 Critical
Products affected by CVE-2026-42354
Sentry 21.12.0
Sentry 22.1.0
Sentry 22.2.0
Sentry 22.3.0
Sentry 22.4.0
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2026-42354 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
DE 18 22.22%
US 11 13.58%
CN 10 12.35%
RU 5 6.17%
AU 4 4.94%
SG 4 4.94%
FI 4 4.94%
FR 4 4.94%
BE 3 3.70%
CZ 3 3.70%

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CVE-2026-42354 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 72 93.51%
Telecommunications 5 6.49%

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