CVE Explorer

CVE-2026-50129

Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.5.11, 4.4.18, and 4.3.24, a DoS can be triggered by (Uncaught Exception vulerability), due to missing exception handling in the math sanitizer. Malformed <math> nodes can result in a DoS of a whole server or targeted users services, depending on the type of action that includes the malformed nodes and the services interacting with it. This vulnerability is fixed in 4.5.11, 4.4.18, and 4.3.24.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:dd0fe669658a20a036e0c1d0ced605101ff80898c870ac7cdc1527160e6dd1bd

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"mastodon","vendor":"mastodon","versions":[{"status":"affected","version":">= 4.5.0-beta.1, < 4.5.11"},{"status":"affected","version":">= 4.4.0-beta.1, < 4.4.18"},{"status":"affected","version":"< 4.3.24"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:826ef7755a94c3f2196d45500d45d4318fdac6bca1b885b9eea25b49bed5a4fb · sha256:f997539fb8f8b5ab… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:826ef7755a94c3f2196d45500d45d4318fdac6bca1b885b9eea25b49bed5a4fb · sha256:f997539fb8f8b5ab… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-248","description":"CWE-248: Uncaught Exception","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:826ef7755a94c3f2196d45500d45d4318fdac6bca1b885b9eea25b49bed5a4fb · sha256:f997539fb8f8b5ab… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"name":"https://github.com/mastodon/mastodon/security/advisories/GHSA-qrgq-9fx2-vf2r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/mastodon/mastodon/security/advisories/GHSA-qrgq-9fx2-vf2r"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:826ef7755a94c3f2196d45500d45d4318fdac6bca1b885b9eea25b49bed5a4fb · sha256:f997539fb8f8b5ab… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

← Back to CVE Explorer