Quick answers
- Is CVE-2026-120826 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-120826 being exploited in the wild.
- How severe is CVE-2026-120826?
- Medium severity, with a CVSS score of 6.5, published 10 November 2026.
- Which products and versions are affected?
- MongoDB affected versions prior to 9.0.7.
- Is there a fix for CVE-2026-120826?
- Yes: fixed in 9.0.7. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-120826 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-120826?
- Check whether you run MongoDB 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: 9.0.7
Technical details
The vulnerability is an authorization bypass in MongoDB's aggregation pipeline and view-definition handling in sharded deployments. A user with only basic read-write privileges on a single database can construct a view using internal-only aggregation stages that escape privilege verification, allowing unauthorized access to data in other databases on the same shard. The attacker needs only database-level write access to create a malicious view; reading it exposes cross-database data.
Affected products
- MongoDB affected versions prior to 9.0.7
Timeline
- 2026-11-10: disclosed
- 2026-11-10: patched