CVE-2026-65652

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Source
https://cve.org/CVERecord?id=CVE-2026-65652
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-65652.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-65652
Published
2026-09-21T11:35:40Z
Modified
2026-09-24T03:30:43Z
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 malformed checksum type causes process termination
Details

github.com/temporalio/tchannel-go did not validate the one-byte checksum-type field in inbound TChannel call frames. A network peer that can reach a listener can complete the standard initialization handshake and send a call request with an unsupported checksum type. The parser uses that value as an index into a four-entry checksum pool, causing an unrecovered Go panic on the connection read goroutine and terminating 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-2026-65652.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "introduced":  "0.0.0-20160105034737-a6904155f628"
                },
                {
                    "fixed":  "1.22.1-0.20260720194454-0cb017f6870a"
                }
            ],
            "source":  "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/temporalio/tchannel-go

Affected ranges

Type
GIT
Repo
https://github.com/temporalio/tchannel-go
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
0cb017f6870a8420695abeb9a4560d39dadc4e2e
Fixed
a6904155f628b9e602b7bc88ef489004a786f7f4
Database specific
Show details 
{
    "source":  "REFERENCES"
}

Affected versions

thrift-v1.*
thrift-v1.0.0-dev
v0.*
v0.01
v1.*
v1.0.0
v1.0.1
v1.0.3
v1.0.4
v1.0.5
v1.0.6
v1.0.8
v1.0.9
v1.1.0
v1.10.0
v1.11.0
v1.12.0
v1.13.0
v1.14.0
v1.15.0
v1.16.0
v1.17.0
v1.18.0
v1.19.0
v1.19.1
v1.2.0
v1.2.1
v1.2.2
v1.2.3
v1.20.0
v1.20.1
v1.21.0
v1.21.1
v1.21.2
v1.22.0
v1.3.0
v1.4.0
v1.5.0
v1.6.0
v1.7.0
v1.8.0
v1.8.1
v1.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-65652.json"