CVE-2025-27157

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Source
https://cve.org/CVERecord?id=CVE-2025-27157
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-27157.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-27157
Aliases
Published
2025-02-27T17:12:39.043Z
Modified
2026-04-10T05:23:47.164962Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
Mastodon's rate-limits are missing on `/auth/setup`
Details

Mastodon is a self-hosted, federated microblogging platform. Starting in version 4.2.0 and prior to versions 4.2.16 and 4.3.4, the rate limits are missing on /auth/setup. Without those rate limits, an attacker can craft requests that will send an email to an arbitrary addresses. Versions 4.2.16 and 4.3.4 fix the issue.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27157.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-770"
    ]
}
References

Affected packages

Git / github.com/mastodon/mastodon

Affected ranges

Type
GIT
Repo
https://github.com/mastodon/mastodon
Events
Introduced
4fcc026f0f1b12a9de21a3af33375a9c8867dd55
Fixed
015858aef749b39e0a0ac662c8022ea0bf23b456
Database specific 
{
    "versions": [
        {
            "introduced": "4.2.0"
        },
        {
            "fixed": "4.2.16"
        }
    ]
}
Type
GIT
Repo
https://github.com/mastodon/mastodon
Events
Introduced
ab36c152f9e5f9054798504354365dcaef4e5c43
Fixed
c1f398ae93d23ebb1ff5c7df5a32bc161a632980
Database specific 
{
    "versions": [
        {
            "introduced": "4.3.0"
        },
        {
            "fixed": "4.3.4"
        }
    ]
}

Affected versions

v4.*
v4.2.0
v4.2.1
v4.2.10
v4.2.11
v4.2.12
v4.2.13
v4.2.14
v4.2.15
v4.2.2
v4.2.3
v4.2.4
v4.2.5
v4.2.6
v4.2.7
v4.2.8
v4.2.9
v4.3.0
v4.3.1
v4.3.2
v4.3.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-27157.json"

Git / github.com/tootsuite/mastodon

Affected ranges

Type
GIT
Repo
https://github.com/tootsuite/mastodon
Events
Introduced
4fcc026f0f1b12a9de21a3af33375a9c8867dd55
Fixed
015858aef749b39e0a0ac662c8022ea0bf23b456
Introduced
ab36c152f9e5f9054798504354365dcaef4e5c43
Fixed
c1f398ae93d23ebb1ff5c7df5a32bc161a632980
Database specific 
{
    "versions": [
        {
            "introduced": "4.2.0"
        },
        {
            "fixed": "4.2.16"
        },
        {
            "introduced": "4.3.0"
        },
        {
            "fixed": "4.3.4"
        }
    ]
}

Affected versions

v4.*
v4.2.0
v4.2.1
v4.2.10
v4.2.11
v4.2.12
v4.2.13
v4.2.14
v4.2.15
v4.2.2
v4.2.3
v4.2.4
v4.2.5
v4.2.6
v4.2.7
v4.2.8
v4.2.9
v4.3.0
v4.3.1
v4.3.2
v4.3.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-27157.json"