CVE•Published 2026-04-01•Modified 2026-05-26•1 article on news•7 live references•NVD data
CVE-2026-35091Corosync · Corosync
Vulnerability data via NVD (ingested)
CVSS v3.1
8.2
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
EPSS percentile
59
Exploit Prediction Scoring System · top 41% of all CVEs
Weaknesses (CWE)
Description
A flaw was found in Corosync. A remote unauthenticated attacker can exploit a wrong return value vulnerability in the Corosync membership commit token sanity check by sending a specially crafted User Datagram Protocol (UDP) packet. This can lead to an out-of-bounds read, causing a denial of service (DoS) and potentially disclosing limited memory contents
Timeline
Published 2026-04-01
Modified 2026-05-26
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-2026-35091Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Corosync Corosync"All exposed Corosync Corosync instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Corosync"HTTP body or banner mentions "Corosync" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-35091Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-35091Censys host search filtered to this CVE id.
grep.app
CVE-2026-35091Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-35091GitHub code search for direct mentions.
Google dork
"CVE-2026-35091" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-35091 on GitHub.