CVE-2023-49079

CRITICALNVD 9.39.3—

9.3

Misskey is an open source, decentralized social media platform. Misskey's missing signature validation allows arbitrary users to impersonate any remote user. This issue has been patched in version 2023.11.1-beta.1.

CVSS v3: 9.3
EG Score: 9.3(medium)
EPSS: 33.3%
KEV: Not listed

Published

November 29, 2023

Last Modified

November 21, 2024

References (2)

security-advisories@githubhttps://github.com/misskey-dev/misskey/security/advisories/GHSA-3f39-6537-3cgc
af854a3a-2127-422b-91ae-364da2661108https://github.com/misskey-dev/misskey/security/advisories/GHSA-3f39-6537-3cgc

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-347Improper Verification of Cryptographic Signature

Data Freshness Timeline

(refreshed 10× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
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2026-05-31 00:15 UTCepss_batch
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2026-05-29 13:43 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
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2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-24 13:11 UTCEG score recompute

Frequently asked(5)

What is CVE-2023-49079?

CVE-2023-49079 is a critical vulnerability published on November 29, 2023. Misskey is an open source, decentralized social media platform. Misskey's missing signature validation allows arbitrary users to impersonate any remote user. This issue has been patched in version 2023.11.1-beta.1.

When was CVE-2023-49079 disclosed?

CVE-2023-49079 was first published in the National Vulnerability Database on November 29, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-49079 actively exploited?

CVE-2023-49079 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 33.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-49079?

CVE-2023-49079 has a CVSS v3 base score of 9.3 (NVD).

How do I remediate CVE-2023-49079?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-49079, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2023-49079

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-49079?

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Published

Last Modified

References (2)

Frequently asked(5)

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