VulnSocial

CVE-2026-35091Disclosure(corosync / corosync)

LOWCVSS 8.2 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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

corosync CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Exploit / PoC references
Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-253

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • corosync
  • enterprise_linux
  • openshift

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Affected systems

Vendors
corosyncredhat
Products
corosyncenterprise_linuxopenshift

6 versions affected across 3 products

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-04-01: 2Technical Details · 2026-04-01: 204-01
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
Full discourse2 posts
  • CVE@CVEnew
    Disclosure

    CVE-2026-35091 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… https://www.cve.org/CVERecord?id=CVE-2026-35091

    Post summary

    The post announces a remote unauthenticated exploitability of a wrong return value flaw in Corosync’s membership commit token sanity check (CVE‑2026‑35091) with no PoC, exploit, or mitigation information provided.

    0000057
    56.9K followersView on X
  • The Hacker Wire@TheHackerWire
    Disclosure

    🟠 CVE-2026-35091 - High 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 craf... https://www.thehackerwire.com/vulnerability/CVE-2026-35091/ https://t.co/9XZYFqDn81

    Post summary

    The tweet announces a newly discovered high‑severity CVE-2026-35091 in Corosync that permits remote unauthenticated exploitation via a wrong return value in the membership commit token sanity check, but does not provide a PoC, exploit code, or patch information.

    0000034
    163 followersView on X
CPE platform detail6 entries

6 of 6 entries

PartVendorProductVersionTarget SWTarget HW
Appcorosynccorosync---
OSredhatenterprise_linux10.0--
OSredhatenterprise_linux7.0--
OSredhatenterprise_linux8.0--
OSredhatenterprise_linux9.0--
Appredhatopenshift4.0--

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