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NVD Vulnerability Details :
CVE-2025-64528
Analyzed
More InfoOfficial Page
Source-security-advisories@github.com
View Known Exploited Vulnerability (KEV) details
Published At-30 Dec, 2025 | 16:15
Updated At-20 Feb, 2026 | 17:04

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.06.3MEDIUM
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
Primary3.15.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Type: Secondary
Version: 4.0
Base score: 6.3
Base severity: MEDIUM
Vector:
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
Type: Primary
Version: 3.1
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CPE Matches
Civilized Discourse Construction Kit, Inc.
discourse
>>discourse>>Versions before 3.5.3(exclusive)
cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*
Civilized Discourse Construction Kit, Inc.
discourse
>>discourse>>2025.11.0
cpe:2.3:a:discourse:discourse:2025.11.0:*:*:*:stable:*:*:*
Civilized Discourse Construction Kit, Inc.
discourse
>>discourse>>2025.12.0
cpe:2.3:a:discourse:discourse:2025.12.0:*:*:*:stable:*:*:*
Weaknesses
CWE IDTypeSource
CWE-202Primarysecurity-advisories@github.com
NVD-CWE-OtherPrimarynvd@nist.gov
CWE ID: CWE-202
Type: Primary
Source: security-advisories@github.com
CWE ID: NVD-CWE-Other
Type: Primary
Source: nvd@nist.gov
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/discourse/discourse/commit/1cb45b8b287597085e3514596ffb1d9b41938f81security-advisories@github.com
Patch
https://github.com/discourse/discourse/commit/6192f55629624925595dae14364fd86cac0f09dfsecurity-advisories@github.com
Patch
https://github.com/discourse/discourse/commit/e936a523b5900a9d866d23ea3da904ba12bb0fb2security-advisories@github.com
Patch
https://github.com/discourse/discourse/security/advisories/GHSA-c59w-jwx7-34v4security-advisories@github.com
Third Party Advisory
Hyperlink: https://github.com/discourse/discourse/commit/1cb45b8b287597085e3514596ffb1d9b41938f81
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/discourse/discourse/commit/6192f55629624925595dae14364fd86cac0f09df
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/discourse/discourse/commit/e936a523b5900a9d866d23ea3da904ba12bb0fb2
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/discourse/discourse/security/advisories/GHSA-c59w-jwx7-34v4
Source: security-advisories@github.com
Resource:
Third Party Advisory
Change History
0Changes found
Details not found