CVE•Published 2026-04-29•Modified 2026-04-29•1 article on news•5 live references•NVD data
CVE-2026-38991
Vulnerability data via NVD (ingested)
CVSS v3.1
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
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Weaknesses (CWE)
Description
Cockpit 2.13.5 and earlier is affected by a misconfiguration within the Bucket component _isFileTypeAllowed function where a specially crafted filename bypasses an extension filter. This allows an authenticated attacker to rename arbitrary files with the .php file extension enabling arbitrary code to be executed on the underlying server.
Timeline
Published 2026-04-29
Modified 2026-04-29
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).
More intel sources (5)
Shodan report
vuln:CVE-2026-38991Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-38991Censys host search filtered to this CVE id.
grep.app
CVE-2026-38991Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-38991GitHub code search for direct mentions.
Google dork
"CVE-2026-38991" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-38991 on GitHub.