GHSA-g4g9-h6f9-v5x2 · Severity: high — A flaw was found in Corosync. An integer overflow vulnerability in Corosync's join message sanity...
A flaw was found in Corosync. An integer overflow vulnerability in Corosync's join message sanity validation allows a remote, unauthenticated attacker to send crafted User Datagram Protocol (UDP) packets. This can cause the service to crash, leading to a denial of service. This vulnerability specifically affects Corosync deployments configured to use totemudp/totemudpu mode.
Conclusion & alert: CVE-2026-35092 is rated High Exploit Risk (65.6/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.36%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-27 | 0.27% | 0.36% | +0.09% |
| 2 | 2026-05-13 | 0.21% | 0.27% | +0.07% |
| 3 | 2026-04-21 | — | 0.21% | — |
Full EPSS history (5 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
GHSA-g4g9-h6f9-v5x2 · Severity: high — A flaw was found in Corosync. An integer overflow vulnerability in Corosync's join message sanity...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2026-35092 not yet assigned priority: Debian including 1 source packages (corosync), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2026-35092 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-35092 |
suse
|
high | CVE-2026-35092 severity important: SUSE including 24 source package names (corosync, corosync-2.4.6-150300.12.16.1, …), 79 product×package rows across 9 product lines (SUSE Linux Enterprise High Availability Extension 12 SP5, SUSE Linux Enterprise High Availability Extension 15 SP4, … (9 product lines)): Fixed 73, Known Not Affected 6. | https://www.suse.com/security/cve/CVE-2026-35092/ |
ubuntu
|
medium | CVE-2026-35092 medium priority: Ubuntu including 1 source packages (corosync), 7 status rows across 7 suites (bionic, focal, jammy, noble, questing, upstream, xenial): needs-triage 4, released 3. | https://ubuntu.com/security/CVE-2026-35092 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| corosync | corosync | — | cpe:2.3:a:corosync:corosync:-:*:*:*:*:*:*:* |
| redhat | openshift | 4.0 | cpe:2.3:a:redhat:openshift:4.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 7.0 | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 8.0 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 9.0 | cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 10.0 | cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* |