CVE-2026-46714

Description

Misskey is an open source, federated social media platform. IVersions 8.63.0 and later, but prior to 2026.5.4, contain a vulnerability that can cause the Misskey web client to slow down or crash when it applies a malformed theme. This issue has been fixed in version 2026.5.4.

Overview

State: PUBLISHED
Assigner (CNA): GitHub_M
CVSS severity: MEDIUM
CVSS score: 5.1 / 10
CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L
Effective score: 5.1 / 10 MEDIUM source: CNA overview
CWE(s): CWE-674
Reserved: 2026-05-15
Published: 2026-08-03 21:58 UTC
Last updated: 2026-08-03 21:58 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/46xxx/CVE-2026-46714.json

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-08-03 22:16:49 UTC
NVD last modified: 2026-08-03 22:16:49 UTC
EPSS score: 0.0026 (probability of exploitation in next 30 days)
EPSS percentile: 17.95% vs all CVEs — higher = more likely to be exploited, as of 2026-08-04

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-52489
Assigner: GitHub_M
Published: Aug 3, 2026, 9:58:36 PM
Updated: Aug 3, 2026, 9:58:36 PM
EUVD base score (CVSS 4.0): 5.1 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L
EUVD-reported EPSS: 0.0000
Vendors: misskey-dev
Products: misskey (8.63.0, < 2026.5.4)

ENISA description: Misskey is an open source, federated social media platform. IVersions 8.63.0 and later, but prior to 2026.5.4, contain a vulnerability that can cause the Misskey web client to slow down or crash when it applies a malformed theme. This issue has been fixed in version 2026.5.4.

EUVD references (2)

Affected products (1)

Vendor	Product	Versions	Platforms
misskey-dev	misskey	`>= 8.63.0, < 2026.5.4` (affected)	—

Vendor references (2)

References embedded in the original CVE record by the assigning CNA.

https://github.com/misskey-dev/misskey/security/advisories/GHSA-wmhf-m93m-rgmj x_refsource_CONFIRM
https://github.com/misskey-dev/misskey/releases/tag/2026.5.4 x_refsource_MISC

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (2)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://github.com/misskey-dev/misskey/releases/tag/2026.5.4 security-advisories@github.com
https://github.com/misskey-dev/misskey/security/advisories/GHSA-wmhf-m93m-rgmj security-advisories@github.com

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-46714.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "misskey",
          "vendor": "misskey-dev",
          "versions": [
            {
              "status": "affected",
              "version": ">= 8.63.0, < 2026.5.4"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Misskey is an open source, federated social media platform. IVersions 8.63.0 and later, but prior to 2026.5.4, contain a vulnerability that can cause the Misskey web client to slow down or crash when it applies a malformed theme. This issue has been fixed in version 2026.5.4."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "LOW",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-674",
              "description": "CWE-674: Uncontrolled Recursion",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-03T21:58:36.825Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-wmhf-m93m-rgmj",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-wmhf-m93m-rgmj"
        },
        {
          "name": "https://github.com/misskey-dev/misskey/releases/tag/2026.5.4",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/misskey-dev/misskey/releases/tag/2026.5.4"
        }
      ],
      "source": {
        "advisory": "GHSA-wmhf-m93m-rgmj",
        "discovery": "UNKNOWN"
      },
      "title": "Misskey: Denial of Service via Uncontrolled Recursion in Theme Compilation"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-46714",
    "datePublished": "2026-08-03T21:58:36.825Z",
    "dateReserved": "2026-05-15T23:26:58.309Z",
    "dateUpdated": "2026-08-03T21:58:36.825Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}