Quick answers
- Is CVE-2026-123282 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-123282 being exploited in the wild.
- How severe is CVE-2026-123282?
- High severity, with a CVSS score of 7.4, published 6 November 2026.
- Which products and versions are affected?
- Jetbrains Datalore before 2026.4.
- Is there a fix for CVE-2026-123282?
- Yes: fixed in Datalore 2026.4. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-123282 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-123282?
- Check whether you run Jetbrains Datalore at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: Datalore 2026.4
Technical details
The vulnerability involves missing expiration validation of account tokens in JetBrains Datalore, allowing an authenticated user to establish a new session with an expired token. This is an authentication bypass affecting the session management component. An authenticated attacker can reuse expired tokens to gain unauthorized access.
Affected products
- JetBrains Datalore before 2026.4
Timeline
- 2026-11-06: disclosed