CVE-2026-58273
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network with a low-privilege account. High risk of data exposure, data tampering.
- Exploit odds
- 0.6% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.6% in the next 30 days (EPSS).
- Severity: 8.1 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.6% · EPSS, next 30 days
- Weakness
- CWE-639 · Insecure direct object reference
- Record status
- Received
Attack profile CVSS 3.1 · 8.1
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-58273.md and follow it. Check whether this project is affected by CVE-2026-58273. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/rucio/rucio/commit/64c0e6a6a93ae88427ff3b7d77532ce08c8a69ec
- https://github.com/rucio/rucio/commit/8bdc38994a8766658d0314d36afc104c9242c96f
- https://github.com/rucio/rucio/commit/8d9ba31514e6f5dca32b8c1db4738582cb37ec3a
- 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/rucio/rucio/security/advisories/GHSA-5j9r-fx4x-rpvg
- https://github.com/rucio/rucio/security/advisories/GHSA-5j9r-fx4x-rpvg
References
- https://github.com/rucio/rucio/commit/64c0e6a6a93ae88427ff3b7d77532ce08c8a69ec
- https://github.com/rucio/rucio/commit/8bdc38994a8766658d0314d36afc104c9242c96f
- https://github.com/rucio/rucio/commit/8d9ba31514e6f5dca32b8c1db4738582cb37ec3a
- 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/rucio/rucio/security/advisories/GHSA-5j9r-fx4x-rpvg
- https://github.com/rucio/rucio/security/advisories/GHSA-5j9r-fx4x-rpvg