CVE-2026-70617

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Source

https://cve.org/CVERecord?id=CVE-2026-70617

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70617.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-70617

Aliases

GHSA-g38j-78fh-jm74

Published

2026-08-05T19:53:34.826Z

Modified

2026-08-07T11:31:05.153891418Z

Severity

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

Summary

Spacebar Server Missing Authorization via Group DM Recipient Endpoint

Details

Spacebar Server before commit dcfd910 contains a missing authorization vulnerability that allows any authenticated attacker to add themselves to arbitrary group DM channels by sending a PUT request to the channels recipient endpoint without membership verification. Attackers can exploit the unguarded PUT /channels/{channelid}/recipients/{userid} handler to join private group DMs, read complete message history, post messages as a participant, and force-add third-party users without their consent.

Database specific

{
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "last_affected": "dcfd91035e3da42abf5f32d8d86a35219225b3d4"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70617.json",
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-862"
    ]
}

References

Affected packages

Git / github.com/spacebarchat/server

Affected ranges

Type

GIT

Repo

https://github.com/spacebarchat/server

Events

Introduced

Fixed

dcfd91035e3da42abf5f32d8d86a35219225b3d4

Database specific

{
    "source": "REFERENCES"
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70617.json"