CVE-2026-58273
Dashboard / Vulnerabilities / CVE-2026-58273
Summary: Rucio: Authorisation Bypass on REST API endpoint for signing URLs
Details: Rucio is a scientific data management framework. From 1.16.1 until 35.9.0, 38.6.0, and 41.0.0rc1, the /credentials/signurl endpoint reads X-Rucio-Account instead of the account stored in request.environ['issuer'] by token authentication. Any authenticated low-privilege user can supply root as the header value and pass the root-only get_signed_url permission check. The server then returns a presigned read, write, or delete URL for an attacker-selected object using stored S3, GCS, or Swift credentials, and X-Rucio-VO can select another tenant in multi-VO deployments. This permits data disclosure, modification, deletion, and cross-tenant access on cloud-backed RSEs. This issue is fixed in versions 35.9.0, 38.6.0, and 41.0.0rc1.
References: https://github.com/rucio/rucio/releases/tag/35.9.0, https://github.com/rucio/rucio/releases/tag/38.6.0, https://github.com/rucio/rucio/releases/tag/41.0.0rc1, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58273.json, https://github.com/rucio/rucio/security/advisories/GHSA-5j9r-fx4x-rpvg, https://nvd.nist.gov/vuln/detail/CVE-2026-58273, https://github.com/rucio/rucio/commit/64c0e6a6a93ae88427ff3b7d77532ce08c8a69ec, https://github.com/rucio/rucio/commit/8bdc38994a8766658d0314d36afc104c9242c96f, https://github.com/rucio/rucio/commit/8d9ba31514e6f5dca32b8c1db4738582cb37ec3a
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