CVE-2026-29090: Cern Rucio

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

### Summary A SQL injection vulnerability exists in Rucio versions 1.30.0 and later before 35.8.5, 38.5.5, 39.4.2, and 40.1.1, in `FilterEngine.create_postgres_query()`. This allows any authenticated Rucio user to execute arbitrary SQL against the PostgreSQL metadata database through the DID search endpoint (`GET /dids/<scope>/dids/search`). When the `postgres_meta` metadata plugin is configured, attacker-controlled filter keys and values are interpolated directly into raw SQL strings via Python `.format()`, then passed to `psycopg3`'s `sql.SQL()` which treats the string as trusted SQL syntax. Depending on the database privileges assigned to the service account, exploitation can expose sensitive tables, modify or delete metadata, access server-side files, or achieve code execution through PostgreSQL features such as COPY ... FROM PROGRAM. This issue affects deployments that explicitly use the postgres_meta metadata plugin. This vulnerability has been fixed in versions 35.8.5, 38.5.5, 39.4.2, and 40.1.1.

Affected products

• Cern Rucio: from 1.30.0, before 35.8.5 (fixed in 35.8.5); from 36.0.0, before 38.5.5 (fixed in 38.5.5); from 39.0.0, before 39.4.2 (fixed in 39.4.2); from 40.0.0, before 40.1.1 (fixed in 40.1.1)

Published 2026-05-06. Last modified 2026-06-17.