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Critical · 9.0 CVE-2026-29090 EUVD-2026-27875GHSA-6j7p-qjhg-9947PYSEC-2026-527

Rucio SQL injection in postgres_meta DID search path compromises PostgreSQL metadata database

Published May 6, 2026 · Updated May 6, 2026 · Assigned by GitHub_M

Description

### 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

VendorProductAffectedFixed
rucio rucio >= 1.30.0, < 35.8.5, >= 35.9.0, < 38.5.5, >= 38.6.0, < 39.4.2, >= 40.0.0, < 40.1.1 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI rucio >= 1.30.0, < 35.8.5 35.8.5 GHSA-6j7p-qjhg-9947
PyPI rucio >= 36.0.0, < 38.5.5 38.5.5 GHSA-6j7p-qjhg-9947
PyPI rucio >= 39.0.0, < 39.4.2 39.4.2 GHSA-6j7p-qjhg-9947
PyPI rucio >= 40.0.0, < 40.1.1 40.1.1 GHSA-6j7p-qjhg-9947
PyPI rucio >= 1.30.0, < 35.8.5 · >= 36.0.0, < 38.5.5 · >= 39.0.0, < 39.4.2 · >= 40.0.0, < 40.1.1 35.8.5, 38.5.5, 39.4.2, 40.1.1 PYSEC-2026-527

References