CVE•Published 2026-05-08•Modified 2026-05-18•1 article on news•5 live references•NVD data
CVE-2026-42354Sentry · Sentry
Vulnerability data via NVD (ingested)
CVSS v3.1
9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS percentile
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Weaknesses (CWE)
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.
Timeline
Published 2026-05-08
Modified 2026-05-18
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-42354Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Sentry Sentry"All exposed Sentry Sentry instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Sentry"HTTP body or banner mentions "Sentry" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-42354Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-42354Censys host search filtered to this CVE id.
grep.app
CVE-2026-42354Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-42354GitHub code search for direct mentions.
Google dork
"CVE-2026-42354" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-42354 on GitHub.