CVE-2026-123858 json
In JetBrains PhpStorm before 2026.3 project files could be automatically uploaded to a deployment server from untrusted projects
published 3d ago modified 3d ago also EUVD-2026-118318
- cvss
- 4.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 4%
- public exploits
- 0
- none known
Summary
In JetBrains PhpStorm before 2026.3 project files could be automatically uploaded to a deployment server from untrusted projects
Patch / fix
- JetBrains PhpStorm 2026.3
Is CVE-2026-123858 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3d ago
Exploit prediction
0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.4 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N |
Affected products
- JetBrains PhpStorm
Classification
- Weakness
-
- CWE-829 Inclusion of Functionality from Untrusted Control Sphere
References
Sources
- CVE List CVE-2026-123858
- NVD CVE-2026-123858
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.