CVE-2026-123848
In JetBrains IntelliJ IDEA before 2026.3 host name verification was missing for server TLS...
In JetBrains IntelliJ IDEA before 2026.3 host name verification was missing for server TLS certificates
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
In JetBrains IntelliJ IDEA before 2026.3 host name verification was missing for server TLS certificates
- Record
CVE-2026-123848- CVSS 3.1
- 7.4 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-297
- Updated
- 2026-11-06
EUVDEUVD-2026-118351
In JetBrains IntelliJ IDEA before 2026.3 host name verification was missing for server TLS certificates
- Record
EUVD-2026-118351- CVSS 3.1
- 7.4 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Updated
- 2026-11-06
GitHub AdvisoriesGHSA-66w3-pp4w-4974
In JetBrains IntelliJ IDEA before 2026.3 host name verification was missing for server TLS...
In JetBrains IntelliJ IDEA before 2026.3 host name verification was missing for server TLS certificates
- Record
GHSA-66w3-pp4w-4974- CVSS 3.1
- 7.4 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-297
- Updated
- 2026-11-06
NVD
In JetBrains IntelliJ IDEA before 2026.3 host name verification was missing for server TLS certificates
- Record
CVE-2026-123848- CVSS 3.1
- 7.4 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-297
- Updated
- 2026-11-06
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| published | CVE List, EUVD | |
| published | EUVD, NVD | |
| aliases, references, title | GitHub Advisories | |
| cwes, severity | CVE List | |
| first indexed | EUVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-123848 is a high vulnerability (CVSS 7.4) in Jetbrains Intellij Idea, published November 6, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.20%, the 10th percentile. No source names a fixed version.