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TI-2026-85840 Aliases CVE-2026-123298GHSA-9qq2-3mqm-vv9g

Command injection in JetBrains Hub SMTP email verification

Priority LOW 26CWE-93Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

JetBrains Hub before 2026.2.52556 is affected. The email verification feature does not neutralize CRLF sequences (CWE-93), which lets an attacker inject SMTP commands. A remote attacker with low privileges can exploit this without user interaction to affect data integrity.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

In JetBrains Hub before 2026.2.52556 sMTP command injection via email verification was possible

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00639 50th percentileScored 2026-11-07
Fix Fixed Hub (JetBrains): 2026.2.52556

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
JetBrainsHubbefore 2026.2.525562026.2.52556Patch availableCNA
  • Hub VendorJetBrains Affected before 2026.2.52556 Fixed in 2026.2.52556 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:jetbrains:hub:*:*:*:*:*:*:*:*——JetBrains
  • cpe:2.3:a:jetbrains:hub:*:*:*:*:*:*:*:* Versions — — ·JetBrains

Remediation

Update JetBrains Hub to 2026.2.52556, the version that fixes this flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA Hub (JetBrains) Fixed in 2026.2.52556

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    JetBrains Hub 2026.2.52556

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-85836 JetBrains Hub privilege escalation through email authentication changesPriority MEDIUM 43
    Show all 2 records →

Timeline

  1. 2026-11-06 Threatist record created from CVE-2026-123298
  2. 2026-11-06 Alias added: GHSA-9qq2-3mqm-vv9g
  3. 2026-11-06 CISA SSVC decision points changed
  4. 2026-11-07 CISA SSVC decision points changed

References

Other 1

  • TI-2026-45031 Deserialization of untrusted data in JetBrains TeamCity KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-18053 In JetBrains TeamCity before 2023.11.4 authentication bypass allowing to perform admin actions was possible KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-22884 In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-18054 In JetBrains TeamCity before 2023.11.4 path traversal allowing to perform limited admin actions was possible KEVCVSS 3.1HIGH 7.3
  • TI-2024-15905 In JetBrains TeamCity before 2023.11.3 authentication bypass leading to RCE was possible CVSS 3.1CRITICAL 9.8
  • TI-2024-24589 Insufficiently protected credentials in JetBrains IntelliJ IDEA CVSS 3.1CRITICAL 9.3
See all 787 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences