BIT-mastodon-2026-23962

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Import Source
https://github.com/bitnami/vulndb/tree/main/data/mastodon/BIT-mastodon-2026-23962.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-mastodon-2026-23962
Aliases
Published
2026-02-03T08:44:37.076Z
Modified
2026-02-03T09:25:56.398284Z
Summary
Mastodon vulnerable to Denial of Service from a single post (client/server)
Details

Mastodon is a free, open-source social network server based on ActivityPub. Mastodon versions before v4.3.18, v4.4.12, and v4.5.5 do not have a limit on the maximum number of poll options for remote posts, allowing attackers to create polls with a very large amount of options, greatly increasing resource consumption. Depending on the number of poll options, an attacker can cause disproportionate resource usage in both Mastodon servers and clients, potentially causing Denial of Service either server-side or client-side. Mastodon versions v4.5.5, v4.4.12, v4.3.18 are patched.

Database specific 
{
    "cpes": [
        "cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*"
    ],
    "severity": "High"
}
References

Affected packages

Bitnami / mastodon

Package

Name
mastodon
Purl
pkg:bitnami/mastodon

Severity

  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.3.18
Introduced
4.4.0
Fixed
4.4.12
Introduced
4.5.0
Fixed
4.5.5

Database specific

source 
"https://github.com/bitnami/vulndb/tree/main/data/mastodon/BIT-mastodon-2026-23962.json"