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CVE-2026-100404 Zulip: Guests can read new messages in non-subscribed public channels

🗓️ 14 Oct 2026 15:50:00Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 28 Views

Guests can read new public-channel messages in Zulip Server despite no subscription.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-100404
14 Oct 202620:56
–circl
cve
CVE
CVE-2026-100404
14 Oct 202615:50
–cve
euvd
EUVD
EUVD-2026-101288
14 Oct 202615:50
–euvd
mend
Mend
CVE-2026-100404
14 Oct 202615:50
–mend
nvd
NVD
CVE-2026-100404
14 Oct 202616:17
–nvd
ptsecurity
Positive Technologies
PT-2026-113776
14 Oct 202600:00
–ptsecurity
[
  {
    "vendor": "zulip",
    "product": "zulip",
    "versions": [
      {
        "version": "< 12.2",
        "status": "affected"
      }
    ]
  }
]

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14 Oct 2026 15:50Current
CVSS 3.16.5
EPSS0.00415
28