Mastodon is a free, open-source social network server based on ActivityPub. In versions before 4.4.6, 4.3.14, and 4.2.27, disabling or suspending a user account does not disconnect the account from the streaming API. This allows disabled or suspended accounts to continue receiving real-time updates through existing streaming connections and to establish new streaming connections, even though they cannot interact with other API endpoints. This undermines moderation actions, as administrators expect disabled or suspended accounts to be fully disconnected from the service. This issue has been patched in versions 4.4.6, 4.3.14, and 4.2.27. No known workarounds exist.
CVE-2025-62175
This medium-severity CVE scores 4.3 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 81% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 4.3
- EG Score
- 4.3(medium)
- EG Risk
- —
- EPSS
- 11.8%
- KEV
- Not listed
Published
October 13, 2025
Last Modified
June 17, 2026
References (2)
- security-advisories@githubhttps://github.com/mastodon/mastodon/commit/2971ac9863b91372e68ac152caf6f4dbff511d17
- security-advisories@githubhttps://github.com/mastodon/mastodon/security/advisories/GHSA-r2fh-jr9c-9pxh
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 44× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-22 14:08 UTCEPSS rescore
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- 2026-07-06 12:11 UTCOSV refresh
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- 2026-06-18 17:52 UTCEPSS rescore
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- 2026-06-18 00:13 UTCOSV refresh
- 2026-06-17 17:52 UTCEPSS rescore
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- 2026-05-31 00:16 UTCEPSS rescore
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- 2026-05-29 20:59 UTCEG score recompute
- 2026-05-29 20:50 UTCOSV refresh
- 2026-05-29 13:44 UTCEPSS rescore
Frequently asked(5)
What is CVE-2025-62175?
When was CVE-2025-62175 disclosed?
Is CVE-2025-62175 actively exploited?
What is the CVSS score of CVE-2025-62175?
How do I remediate CVE-2025-62175?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2025-62175
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