PT-2026-36821 · Sentry · Sentry

Jaydns · CVE-2026-42354 · Published 2026-04-30 · Updated 2026-06-29

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Sentry versions 21.12.0 through 26.4.0

Description A flaw in the SAML SSO implementation allows attackers to take over user accounts in multi-org instances through malicious Identity Providers. If a victim's email is known, an attacker can bypass authentication and link identities to gain unauthorized access.

Recommendations Upgrade to version 26.4.1.

Exploit

Fix

Authentication Bypass by Spoofing

Weakness Enumeration

CWE-290

Related Identifiers

CVE-2026-42354

ECHO-EA50-90D1-D8B8

GHSA-RCMW-7MC7-3RJ7

PYSEC-2026-534

Affected Products

Sentry

References · 28

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42354.json · Exploit
• https://github.com/getsentry/sentry/commit/0c67558ae7fe08738912d4c5233b53ead048da3b · Patch
• https://github.com/getsentry/sentry/security/advisories/GHSA-rcmw-7mc7-3rj7 · Vendor Advisory
• https://github.com/getsentry/sentry/pull/113720 · Patch
• https://osv.dev/vulnerability/GHSA-rcmw-7mc7-3rj7 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-42354 · Security Note
• https://osv.dev/vulnerability/CVE-2026-42354 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2026-534 · Vendor Advisory
• https://github.com/getsentry/sentry · Note
• https://github.com/getsentry/sentry/releases/tag/26.4.1 · Note
• https://twitter.com/VulmonFeeds/status/2052929639048261962 · Twitter Post
• https://twitter.com/lyrie_ai/status/2059949363170865416 · Twitter Post
• https://pypi.org/project/sentry · Note
• https://t.me/CVEtracker/53175 · Telegram Post
• https://twitter.com/lyrie_ai/status/2060594825318031753 · Twitter Post