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CWE

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CVE-2026-25138

Published: Feb 25, 2026

Modified: Feb 26, 2026

PUBLISHED

CVSS v3.1

5.3

MEDIUM

Description

Rucio is a software framework that provides functionality to organize, manage, and access large volumes of scientific data using customizable policies. Prior to versions 35.8.3, 38.5.4, and 39.3.1, the WebUI login endpoint returns distinct error messages depending on whether a supplied username exists, allowing unauthenticated attackers to enumerate valid usernames. Versions 35.8.3, 38.5.4, and 39.3.1 fix the issue.

Vendor	Product	Versions
rucio	rucio	affected `< 35.8.3` affected `>= 36.0.0rc1, < 38.5.4` affected `>= 39.0.0rc1, < 39.3.1`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

References

https://github.com/rucio/rucio/security/advisories/GHSA-38wq-6q2w-hcf9

x_refsource_CONFIRM

https://cheatsheetseries.owasp.org/cheatsheets/Authentication_Cheat_Sheet.html#authentication-and-error-messages

x_refsource_MISC

https://github.com/rucio/rucio/releases/tag/35.8.3

x_refsource_MISC

https://github.com/rucio/rucio/releases/tag/38.5.4

x_refsource_MISC

https://github.com/rucio/rucio/releases/tag/39.3.1

x_refsource_MISC

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