Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The opensearch-security plugin, versions before 2.11.0.0 and before 1.3.14.0 (for the 1.x line, including 2.0.0.0 and later within that range), lets authenticated users with read-only access to a tenant create, edit and delete index metadata for dashboards and visualizations in that tenant. An attacker with such an account could make those objects unavailable, though index data and read access are not affected. Upgrade to 2.11.0.0 or 1.3.14.0; as a workaround, disable the tenants functionality.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 5.4 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0049, the 42nd percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:18 UTC First seen by agentprime
- 31 Oct 2026, 14:18 UTC Confirmed by OSV