Vendor
Mastodon vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 8 vulnerabilities in Mastodon: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-59825, was published on 18 August 2026. 1 technology has a page of its own.
- Last 7 days
- 0
- Last 90 days
- 1
- Critical, all time
- 0
- Exploited in the wild
- 0
About Mastodon
Mastodon is a non-profit organization that develops the Mastodon decentralized social networking software.
Mastodon technologies
Latest Mastodon vulnerabilities
- CVE-2026-59825: Mastodon LDAP authentication global TLS verification bypasshighCVSS 7.4EPSS 0.4%
- CVE-2026-50129: Mastodon denial of service via uncaught exception in math sanitizerhighCVSS 7.5
- CVE-2026-50128: Mastodon signature verification bypass in attributionDomains spoofingmediumCVSS 5.3
- CVE-2026-48028: Mastodon spoofing via JSON entry removal in signed activitiesmediumCVSS 6.5
- CVE-2026-47389: Mastodon SSRF protection bypass in PrivateAddressCheckhighCVSS 8.6
- CVE-2026-46349: Mastodon signature bypass via JSON-LD restructuringmediumCVSS 5.3
- CVE-2026-46348: Mastodon SSRF via IPv6 loopback bypassinfoCVSS 8.7
- CVE-2026-47777: Mastodon authorization bypass in experimental Collections featurehighCVSS 7.5
Most severe Mastodon vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-47389: Mastodon SSRF protection bypass in PrivateAddressCheckhighCVSS 8.6
- CVE-2026-50129: Mastodon denial of service via uncaught exception in math sanitizerhighCVSS 7.5
- CVE-2026-47777: Mastodon authorization bypass in experimental Collections featurehighCVSS 7.5
- CVE-2026-59825: Mastodon LDAP authentication global TLS verification bypasshighCVSS 7.4EPSS 0.4%
- CVE-2026-48028: Mastodon spoofing via JSON entry removal in signed activitiesmediumCVSS 6.5
- CVE-2026-50128: Mastodon signature verification bypass in attributionDomains spoofingmediumCVSS 5.3
- CVE-2026-46349: Mastodon signature bypass via JSON-LD restructuringmediumCVSS 5.3
- CVE-2026-46348: Mastodon SSRF via IPv6 loopback bypassinfoCVSS 8.7
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 1 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/mastodon.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Mastodon vulnerabilities", https://junglewise.ai/threats/vendors/mastodon, 26 September 2026.