CVE•Published 2026-08-05•Modified 2026-09-16•1 article on news•6 live references•NVD data
CVE-2026-70617
Vulnerability data via NVD (ingested)
CVSS v3.1
8.1
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS percentile
14
Exploit Prediction Scoring System · top 86% of all CVEs
Weaknesses (CWE)
Description
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/{channel_id}/recipients/{user_id} handler to join private group DMs, read complete message history, post messages as a participant, and force-add third-party users without their consent.
Timeline
Published 2026-08-05
Modified 2026-09-16
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-70617Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-70617Censys host search filtered to this CVE id.
grep.app
CVE-2026-70617Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-70617GitHub code search for direct mentions.
Google dork
"CVE-2026-70617" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-70617 on GitHub.