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CVE-2025-68659

🗓️ 28 Jan 2026 18:51:40Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 4 Views🌐 WEB

CVE-2025-68659: Discourse DoS via large payload on username change; fixed in 3.5.4 and later.

Related
Detection
Affected
Refs
Paths
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2025-68659
28 Jan 202618:51
attackerkb
Circl
CVE-2025-68659
28 Jan 202619:26
circl
CNNVD
Discourse security vulnerabilities
28 Jan 202600:00
cnnvd
Cvelist
CVE-2025-68659 Discourse has DoS vulnerability in username change endpoint
28 Jan 202618:51
cvelist
EUVD
EUVD-2025-206425
28 Jan 202618:51
euvd
NVD
CVE-2025-68659
28 Jan 202619:16
nvd
OSV
BIT-DISCOURSE-2025-68659 Discourse has DoS vulnerability in username change endpoint
2 Feb 202608:42
osv
OSV
CVE-2025-68659 Discourse has DoS vulnerability in username change endpoint
28 Jan 202618:51
osv
Positive Technologies
PT-2026-5183
28 Jan 202600:00
ptsecurity
RedhatCVE
CVE-2025-68659
29 Jan 202621:21
redhatcve
Rows per page
NVD
Vulners
Node
discoursediscourseRange<3.5.4stable
OR
discoursediscourseRange2025.11.02025.11.2stable
OR
discoursediscourseMatch2025.12.0stable
OR
discoursediscourseMatch2026.1.0stable
[
  {
    "vendor": "discourse",
    "product": "discourse",
    "versions": [
      {
        "version": "< 3.5.4",
        "status": "affected"
      },
      {
        "version": ">= 2025.11.0-latest, < 2025.11.2",
        "status": "affected"
      },
      {
        "version": ">= 2025.12.0-latest, < 2025.12.1",
        "status": "affected"
      },
      {
        "version": ">= 2026.1.0-latest, < 2026.1.0",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
bodyrequest body/u//preferences/usernameDenial of service by oversized JSON payloads to the username change endpoint.CWE-770

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30 Jan 2026 20:44Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.14.3 - 5.3
EPSS0.00169
SSVC
4