CVE-2025-64528

Dec. 31, 2025, 8:42 p.m.

6.3
Medium

Description

Discourse is an open source discussion platform. Prior to versions 3.5.3, 2025.11.1, and 2025.12.0, an attacker who knows part of a username can find the user and their full name via UI or API, even when `enable_names` is disabled. Versions 3.5.3, 2025.11.1, and 2025.12.0 contain a fix.

Product(s) Impacted

Vendor Product Versions
Discourse
  • Discourse
  • <3.5.3, 3.5.3, 2025.11.1, 2025.12.0

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-202
Exposure of Sensitive Information Through Data Queries
When trying to keep information confidential, an attacker can often infer some of the information by using statistics.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a discourse discourse <3.5.3 / / / / / / /
a discourse discourse 3.5.3 / / / / / / /
a discourse discourse 2025.11.1 / / / / / / /
a discourse discourse 2025.12.0 / / / / / / /

References

https://github.com/discourse/discourse/commit/1cb45b8b287597085e3514596ffb1d9b41938f81
https://github.com/discourse/discourse/commit/6192f55629624925595dae14364fd86cac0f09df
https://github.com/discourse/discourse/commit/e936a523b5900a9d866d23ea3da904ba12bb0fb2
https://github.com/discourse/discourse/security/advisories/GHSA-c59w-jwx7-34v4

Tags

security-advisories@github.com
CWE-202
2025-12-30
CVE-2025-64528

CVSS Score

6.3 / 10

CVSS Data - 4.0

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Attack Requirements: PRESENT
  • Privileges Required: NONE
  • User Interaction: NONE
  • Scope:
  • Confidentiality Impact: LOW
  • Integrity Impact: NONE
  • Availability Impact: NONE
  • Exploit Maturity: NOT_DEFINED

    • CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

    View Vector String

Timeline

Published: Dec. 30, 2025, 4:15 p.m.
Last Modified: Dec. 31, 2025, 8:42 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

security-advisories@github.com

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.