CVE•Published 2026-06-02•Modified 2026-06-04•1 article on news•6 live references•NVD data
CVE-2026-42849Goauthentik · Authentik
Vulnerability data via NVD (ingested)
CVSS v3.1
9.3
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
EPSS percentile
1
Exploit Prediction Scoring System · top 99% of all CVEs
Weaknesses (CWE)
Description
authentik is an open-source identity provider. Prior to versions 2025.12.5 and 2026.2.3, due to the implementation of stages in the SFE (Simple Flow Executor) in order to make the interface more compatible with legacy browsers, it was possible to use an XSS exploit in the AutosubmitStage. This issue has been patched in versions 2025.12.5 and 2026.2.3.
Timeline
Published 2026-06-02
Modified 2026-06-04
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 tag882 hosts
vuln:CVE-2026-42849Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Goauthentik Authentik"All exposed Goauthentik Authentik instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Authentik"HTTP body or banner mentions "Authentik" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-42849Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-42849Censys host search filtered to this CVE id.
grep.app
CVE-2026-42849Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-42849GitHub code search for direct mentions.
Google dork
"CVE-2026-42849" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.