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TI-2026-85848 Aliases CVE-2026-123307GHSA-32c5-4pwr-9g5v

Server-side request forgery in JetBrains IntelliJ IDEA

Priority LOW 32CWE-918Published · Updated

Key facts

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

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

Summary

JetBrains IntelliJ IDEA before 2026.3, 2026.2.4 is affected. The flaw is a server-side request forgery (CWE-918) that lets an unauthenticated attacker make the IDE connect to an arbitrary host through run configurations. The attack requires user interaction and is hard to carry out.

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

Description from the CNA

In JetBrains IntelliJ IDEA before 2026.3, 2026.2.4 unauthenticated connection to an arbitrary host via run configurations was possible

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00273 19th percentileScored 2026-11-07
Fix Fixed IntelliJ IDEA (JetBrains): 2026.3, 2026.2.4

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
JetBrainsIntelliJ IDEAbefore 2026.3, 2026.2.42026.3, 2026.2.4Patch availableCNA
  • IntelliJ IDEA VendorJetBrains Affected before 2026.3, 2026.2.4 Fixed in 2026.3, 2026.2.4 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:intellij_idea:*:*:*:*:*:*:*:*——JetBrains
  • cpe:2.3:a:jetbrains:intellij_idea:*:*:*:*:*:*:*:* Versions — — ·JetBrains

Remediation

Upgrade JetBrains IntelliJ IDEA to version 2026.3 or 2026.2.4, which fix this flaw.

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

  • Fix · CNA IntelliJ IDEA (JetBrains) Fixed in 2026.3, 2026.2.4

Fixed in the same release

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

  • Release ·

    JetBrains IntelliJ IDEA 2026.3, 2026.2.4

    6 records Highest priority Priority LOW 6 LOW

    Other records, highest priority first

    • TI-2026-85835 Code execution in IntelliJ IDEA via Terraform tool path settingPriority LOW 35
    • TI-2026-85850 Cross-site scripting in JetBrains IntelliJ IDEA Markdown previewPriority LOW 27
    • TI-2026-85852 Command execution in JetBrains IntelliJ IDEA via Markdown previewPriority LOW 25
    Show all 6 records →

Timeline

  1. 2026-11-06 Threatist record created from CVE-2026-123307
  2. 2026-11-06 Alias added: GHSA-32c5-4pwr-9g5v
  3. 2026-11-07 CISA SSVC decision points changed
  4. 2026-11-07 Priority changed: MEDIUM → LOW
  5. 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