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4 vulnerabilities by phoenixframework
CVE-2026-32689 (GCVE-0-2026-32689)
Vulnerability from cvelistv5 – Published: 2026-05-05 15:17 – Updated: 2026-05-05 15:41
VLAI?
Title
Long-poll NDJSON body splitting causes unbounded memory allocation in Phoenix
Summary
Allocation of Resources Without Limits or Throttling vulnerability in phoenixframework phoenix allows a denial of service via the long-poll transport's NDJSON body handling.
In 'Elixir.Phoenix.Transports.LongPoll':publish/4, when a POST request is received with Content-Type: application/x-ndjson, the request body is split on newline characters using String.split/2 with no limit on the number of resulting segments. An attacker can send a body consisting entirely of newline bytes, causing a 1:1 amplification into a list of empty binaries — a 1 MB body produces approximately one million list elements, an 8 MB body approximately 8.4 million. Each element is then walked by Enum.map, materializing another list of the same size. This exhausts BEAM memory and schedulers, crashing the node and terminating all active sessions.
A session token required to reach the vulnerable endpoint is freely obtainable by any client via an unauthenticated GET request to the same URL with a matching Origin header, making this attack effectively unauthenticated.
This issue affects phoenix: from 1.7.0 before 1.7.22 and 1.8.6.
Severity ?
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| phoenixframework | phoenix |
Affected:
1.7.0 , < 1.7.22
(semver)
Affected: 1.8.0 , < 1.8.6 (semver) cpe:2.3:a:phoenixframework:phoenix:*:*:*:*:*:*:*:* |
|||||||
|
|||||||||
Credits
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CVE-2021-46871 (GCVE-0-2021-46871)
Vulnerability from cvelistv5 – Published: 2023-01-10 00:00 – Updated: 2025-04-09 17:21
VLAI?
Summary
tag.ex in Phoenix Phoenix.HTML (aka phoenix_html) before 3.0.4 allows XSS in HEEx class attributes.
Severity ?
6.1 (Medium)
CWE
- n/a
Assigner
References
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CVE-2022-42975 (GCVE-0-2022-42975)
Vulnerability from cvelistv5 – Published: 2022-10-17 00:00 – Updated: 2025-05-10 03:06
VLAI?
Summary
socket/transport.ex in Phoenix before 1.6.14 mishandles check_origin wildcarding. NOTE: LiveView applications are unaffected by default because of the presence of a LiveView CSRF token.
Severity ?
7.5 (High)
CWE
- n/a
Assigner
References
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CVE-2017-1000163 (GCVE-0-2017-1000163)
Vulnerability from cvelistv5 – Published: 2017-11-17 21:00 – Updated: 2024-09-17 03:59
VLAI?
Summary
The Phoenix Framework versions 1.0.0 through 1.0.4, 1.1.0 through 1.1.6, 1.2.0, 1.2.2 and 1.3.0-rc.0 are vulnerable to unvalidated URL redirection, which may result in phishing or social engineering attacks.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
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"url": "https://elixirforum.com/t/security-releases-for-phoenix/4143"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2017-1000163",
"datePublished": "2017-11-17T21:00:00.000Z",
"dateReserved": "2017-11-17T00:00:00.000Z",
"dateUpdated": "2024-09-17T03:59:53.617Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}