CVE-2026-48106

See a problem?
Please try reporting it to the source first.

Source

https://cve.org/CVERecord?id=CVE-2026-48106

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48106.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-48106

Aliases

GHSA-wfgr-8x84-22q7

Published

2026-08-21T22:49:12Z

Modified

2026-10-21T02:58:18Z

Severity

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

Summary

Arc Enterprise cluster replication accepts unauthenticated MsgReplicateSync messages, enabling cluster-wide data injection from any TLS-trusted peer

Details

Arc is an open, SQL-native time-series database for telemetry. Prior to version 26.06.1, Arc Enterprise's cluster replication receiver at internal/cluster/replication/receiver.go validates only the wire-format envelope (length, opcode) of inbound messages. The MsgReplicateSync payload itself is accepted without any application-layer authentication — no HMAC, no signature, no per-message nonce. The replication stream is protected at the transport layer by TLS / mTLS, but there is no protection against application-layer message tampering or replay once a peer is on the cluster network. This is fixed in 2026.06.1. Some workarounds are available. Restrict cluster network access to known-trusted peers via strict firewall rules, audit replication logs for unexpected MsgReplicateSync traffic, and/or disable cluster mode until the fix is available.

Database specific

{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-306",
        "CWE-345",
        "CWE-924"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48106.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "fixed":  "2026.06.1"
                        }
                    ],
                    "source":  "AFFECTED_FIELD",
                    "strategy":  "StringRangeExpression"
                }
            ]
        },
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "fixed":  "2026.06.1"
                        }
                    ],
                    "source":  "DESCRIPTION"
                }
            ]
        }
    ]
}

References

Affected packages

Git / github.com/basekick-labs/arc

Affected ranges

Type

GIT

Repo

https://github.com/basekick-labs/arc

Events

Introduced

Fixed

8038f6f80f77bb48dbaa220e7415957be3988eff

Database specific

Show details

{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "26.06.1"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}

Affected versions

v25.*

v25.12.1

v26.*

v26.01.1

v26.01.2

v26.02.1

v26.02.2

v26.03.1

v26.03.2

v26.04.1

v26.05.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48106.json"