CVE-2026-42354
critical
CVSS v3
9.8
CVSS v4 NEW
—
VIR risk
9.8
Description
Sentry's improper authentication on SAML SSO process allows user identity linking
Predictions
Exploit likelihood
97%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| sentry | sentry | {"startIncluding":"21.12.0","endExcluding":"26.4.1"} | 26.4.1 |
References
- https://github.com/getsentry/sentry/commit/0c67558ae7fe08738912d4c5233b53ead048da3b
- https://github.com/getsentry/sentry/pull/113720
- https://github.com/getsentry/sentry/releases/tag/26.4.1
- https://github.com/getsentry/sentry/security/advisories/GHSA-rcmw-7mc7-3rj7
- https://nvd.nist.gov/vuln/detail/CVE-2026-42354
- https://github.com/getsentry/sentry
- https://github.com/advisories/GHSA-rcmw-7mc7-3rj7
CWEs
CWE-290
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.