CVE-2026-65653

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Source

https://cve.org/CVERecord?id=CVE-2026-65653

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-65653.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-65653

Published

2026-09-21T11:36:47Z

Modified

2026-10-28T02:31:14Z

Severity

8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

temporalio/tchannel-go zero-chunk call fragment causes process termination

Details

github.com/temporalio/tchannel-go did not reject TChannel call fragments containing checksum metadata but no length-prefixed argument chunks. The fragment reader left its chunk slice empty and then unconditionally selected the first element. A network peer can supply such a malformed call fragment, including as a direct initial call request after completing the standard initialization handshake. On that inbound path, the resulting unrecovered Go slice-bounds panic occurs on a library-created dispatch goroutine and terminates the hosting process. This allows remote denial of service against applications that expose the listener to untrusted peers. The impact is limited to availability; no confidentiality or integrity impact was identified.

Database specific

{
    "cna_assigner": "Temporal",
    "cwe_ids": [
        "CWE-129"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65653.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "introduced": "0.0.0-20150531204735-8d8ca17342b3"
                        },
                        {
                            "fixed": "1.22.1-0.20260720194454-0cb017f6870a"
                        }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                }
            ]
        }
    ]
}

References

Affected packages

Git / github.com/temporalio/tchannel-go

Affected ranges

Type

GIT

Repo

https://github.com/temporalio/tchannel-go

Events

Introduced

Fixed

8d8ca17342b3620d3a6d5c1a825145595e7588ff

Fixed

1dcfa67262ecd56a24f12940f4082549190cb5d1

Fixed

0cb017f6870a8420695abeb9a4560d39dadc4e2e

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "fixed": "8d8ca17342b3620d3a6d5c1a825145595e7588ff"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "range": [
                {
                    "fixed": "1dcfa67262ecd56a24f12940f4082549190cb5d1"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "range": [
                {
                    "fixed": "0cb017f6870a8420695abeb9a4560d39dadc4e2e"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-65653.json"