CVE•Published 2026-06-01•Modified 2026-06-03•0 articles on news•5 live references•NVD data
CVE-2026-45278Nextcloud · User_oidc
Vulnerability data via NVD (ingested)
CVSS v3.1
3.3
LOW
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
EPSS percentile
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Weaknesses (CWE)
Description
Nextcloud is an open source content collaboration platform. From version 6.1.0 to before version 8.2.2, an attacker can craft links that would redirect users to another website, when the victim uses the attackers link to log in via user OIDC. This issue has been patched in version 8.2.2.
Timeline
Published 2026-06-01
Modified 2026-06-03
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-2026-45278Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Nextcloud User Oidc"All exposed Nextcloud User Oidc instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"User Oidc"HTTP body or banner mentions "User Oidc" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-45278Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-45278Censys host search filtered to this CVE id.
grep.app
CVE-2026-45278Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-45278GitHub code search for direct mentions.
Google dork
"CVE-2026-45278" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-45278 on GitHub.
We haven't classified any articles referencing CVE-2026-45278 yet. The external references above still apply.