CVE-2026-123277
In JetBrains CLion before 2026.3, 2026.2.4.1 missing authentication allowed local users to...
In JetBrains CLion before 2026.3, 2026.2.4.1 missing authentication allowed local users to obtain the debug session environment on Linux
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
In JetBrains CLion before 2026.3, 2026.2.4.1 missing authentication allowed local users to obtain the debug session environment on Linux
- Record
CVE-2026-123277- CVSS 3.1
- 5.0 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:L - Weakness
- CWE-306
- Updated
- 2026-11-06
EUVDEUVD-2026-118042
In JetBrains CLion before 2026.3, 2026.2.4.1 missing authentication allowed local users to obtain the debug session environment on Linux
- Record
EUVD-2026-118042- CVSS 3.1
- 5.0 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:L - Updated
- 2026-11-06
GitHub AdvisoriesGHSA-xh9w-6qf8-p8xw
In JetBrains CLion before 2026.3, 2026.2.4.1 missing authentication allowed local users to...
In JetBrains CLion before 2026.3, 2026.2.4.1 missing authentication allowed local users to obtain the debug session environment on Linux
- Record
GHSA-xh9w-6qf8-p8xw- CVSS 3.1
- 5.0 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:L - Weakness
- CWE-306
- Updated
- 2026-11-06
NVD
In JetBrains CLion before 2026.3, 2026.2.4.1 missing authentication allowed local users to obtain the debug session environment on Linux
- Record
CVE-2026-123277- CVSS 3.1
- 5.0 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:L - Weakness
- CWE-306
- Updated
- 2026-11-07
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-2026-123277 is a medium vulnerability (CVSS 5.0) in Jetbrains Clion, published November 6, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.12%, the 1st percentile. No source names a fixed version.