CVE-2026-123294: JetBrains Hub · Mass Assignment
Affects JetBrains HubSource CVE Database V5
Not known to be exploited · CVSS 9.6 Critical : upgrade to 2026.2.52556 as a priority.
Data as of 6 Nov 2026, 11:02 UTC
Thin evidence
One scorer or none| CNA (JetBrains) | CVSS 3.1 | 9.6 |
|---|
- Patch
- Available – fixed in 2026.2.52556
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 6 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Upgrade JetBrains Hub to 2026.2.52556.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| JetBrainsHub | Affected
| Fixed in
|
AI-suggested
Upgrade JetBrains Hub to version 2026.2.52556 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is indicated.
Description
CVE-2026-123294 is a critical vulnerability in JetBrains Hub versions before 2026.2.52556 that allows privilege escalation. The flaw involves improperly controlled modification of dynamically-determined object attributes, specifically by changing email authentication details during the verification flow. This can lead to an attacker gaining elevated privileges without user interaction. The issue is fixed in version 2026.2.52556.