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PYSEC-2026-527

CriticalCVSS 9.9 / 10
Published Jun 29, 2026·Last modified Jun 29, 2026
Affected Components(0)

No affected components available

Description

Summary

A SQL injection vulnerability in FilterEngine.create_postgres_query allows any authenticated Rucio user to execute arbitrary SQL against the configured PostgreSQL metadata database through the DID search endpoint (GET /dids/<scope>/dids/search). When the external metadata plugin postgres_meta is configured, attacker-controlled filter keys and values are interpolated directly into raw SQL statements via Python str.format. This enables full database compromise including data exfiltration, data modification, and potential remote code execution via COPY ... FROM PROGRAM.

Details

Will follow in two weeks (2025-05-19).

Impact

Vulnerability type: SQL Injection (CWE-89)

Who is impacted:

  • Rucio deployments that have explicitly configured the postgres_meta metadata plugin.

What an attacker can do:

  • Data modification: PostgreSQL stacked queries enable arbitrary INSERT/UPDATE/DELETE operations.
  • Remote code execution: Via PostgreSQL's COPY ... FROM PROGRAM if the database user has superuser or pg_execute_server_program privileges.
  • File system access: Via COPY ... TO/FROM '/path' if filesystem permissions allow.

Further elevation when the same postgres database and access is used for metadata and for Rucio itself

  • Full database read access: Extract any table including identities (password hashes and salts), tokens (active authentication sessions), accounts (user enumeration), rse_settings (storage endpoint credentials), and rules (data management policies) could be extracted.
  • Password hash extraction: Combined with Rucio's use of single-iteration SHA-256 for password hashing (no KDF), extracted hashes can be cracked at GPU speed.
  • Authentication token theft: Active bearer tokens can be extracted and used for immediate session hijacking.

Required attacker privileges: Any authenticated Rucio user. Authentication tokens can be obtained via any supported method (userpass, x509, OIDC, SAML, SSH, GSS). No special roles or administrative permissions are required. The GET /dids/<scope>/dids/search endpoint is available to all authenticated users.

Risk Scores
Base Score
9.9

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.

Threat Intelligence
9.1

Active exploitation in the wild has been confirmed. Immediate patching or mitigation is required.

EPSS
0.30%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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Critical severity
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