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CVE-2026-65654

temporalio/ringpop-go fails to enforce configured label limits on inbound membership gossip

CVSS 4.0 8.7 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-65654

Published

github.com/temporalio/ringpop-go enforces configured LabelOptions limits when an application changes the local node's labels, but affected versions do not apply those limits to label maps received in SWIM membership changes. A network peer that can reach a live Ringpop TChannel listener can repeatedly submit changes for distinct member addresses containing label keys, values, or counts that exceed the receiver's configured limits. Accepted labels are retained in the member list and disseminated to peers, allowing memory and gossip-bandwidth consumption to exceed configured bounds and potentially making the hosting process unavailable. The fix validates peer-supplied label maps before they are retained or disseminated. Availability only; no confidentiality or integrity impact was identified.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-65654

Published

github.com/temporalio/ringpop-go

https://pkg.go.dev

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Temporal Technologies, Inc.",
                    "product": "temporalio/ringpop-go",
                    "collectionURL": "https://pkg.go.dev",
                    "packageName": "github.com/temporalio/ringpop-go",
                    "repo": "https://github.com/temporalio/ringpop-go",
                    "modules": [
                        "Labels",
                        "SWIM membership"
                    ],
                    "programFiles": [
                        "swim/labels.go",
                        "swim/member.go",
                        "swim/memberlist.go"
                    ],
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0.0.0-20160824133849-d0de5fe13330",
                            "lessThan": "0.0.0-20260724173031-c317effcdc8b",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON