Critical

Sentry's improper authentication on SAML SSO process allows user impersonation

  • Disclosed: 15.01.2025
  • Updated: 11.10.2026 13:17

Impact

A critical vulnerability was discovered in the SAML SSO implementation of Sentry. It was reported to us via our private bug bounty program.

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.

Patches

  • Sentry SaaS: The fix was deployed on Jan 14, 2025.
  • Self-Hosted Sentry: If only a single organization is allowed (SENTRY_SINGLE_ORGANIZATION = True), then no action is needed. Otherwise, users should upgrade to version 25.1.0 or higher.

Workarounds

No known workarounds.

References

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Python (PyPI) sentry >= 21.12.0, < 25.1.0 25.1.0

References

CVSS score 9.1/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE)
CWE-287
Platform
Python (PyPI)
Package
sentry
Disclosed
15.01.2025
Updated
11.10.2026 13:17

Sources and licenses

OSV / GitHub Advisory Database - GHSA-7pq6-v88g-wf3w - CC BY 4.0

OSV / GitHub Advisory Database - PYSEC-2026-532 - PyPA Advisory Database; CC BY 4.0

Vulnerability history: sentry

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (15) in the archive
Total entries
15
First → latest
12.2022 05.2026
Without a fix
1
Exploited in attacks
0

Severity breakdown

  • Critical 3
  • High 7
  • Medium 4
  • Low 1

Disclosures per year

  1. 2022: 1
  2. 2023: 4
  3. 2024: 6
  4. 2025: 1
  5. 2026: 3
Severity:
  1. Critical · 9.1 CVE-2026-42354 >= 21.12.0, < 26.4.1 26.4.1
  2. Critical · 9.1 CVE-2026-27197 >= 21.12.0, < 26.2.0 26.2.0
  3. Sentry's improper authentication on SAML SSO process allows user impersonation this entry
    Critical · 9.1 CVE-2025-22146 >= 21.12.0, < 25.1.0 25.1.0
  4. High · 7.1 CVE-2024-45606 >= 23.4.0, < 24.9.0 24.9.0
  5. High · 6.5 CVE-2024-45605 >= 23.9.0, < 24.9.0 24.9.0
  6. High · 7.1 CVE-2024-41656 >= 10.0.0, < 24.7.1 24.7.1
  7. High · 7.3 CVE-2024-32474 >= 24.3.0, < 24.4.1 24.4.1
  8. High · 8.1 CVE-2023-39349 >= 22.1.0, < 23.7.2 23.7.2
  9. High · 7.7 CVE-2023-36826 >= 8.21.0, < 23.5.2 23.5.2

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