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Package details: pkg:pypi/waitress@2.1.0b0
purl pkg:pypi/waitress@2.1.0b0
Next non-vulnerable version 3.0.1
Latest non-vulnerable version 3.0.1
Risk
Vulnerabilities affecting this package (3)
Vulnerability Summary Fixed by
VCID-gnaw-ht2x-9bas
Aliases:
CVE-2022-24761
GHSA-4f7p-27jc-3c36
PYSEC-2022-169
2.1.1
Affected by 3 other vulnerabilities.
VCID-trp4-phyv-bfb2
Aliases:
CVE-2024-49768
GHSA-9298-4cf8-g4wj
PYSEC-2024-210
Waitress is a Web Server Gateway Interface server for Python 2 and 3. A remote client may send a request that is exactly recv_bytes (defaults to 8192) long, followed by a secondary request using HTTP pipelining. When request lookahead is disabled (default) we won't read any more requests, and when the first request fails due to a parsing error, we simply close the connection. However when request lookahead is enabled, it is possible to process and receive the first request, start sending the error message back to the client while we read the next request and queue it. This will allow the secondary request to be serviced by the worker thread while the connection should be closed. Waitress 3.0.1 fixes the race condition. As a workaround, disable channel_request_lookahead, this is set to 0 by default disabling this feature.
3.0.1
Affected by 0 other vulnerabilities.
VCID-ujpr-gc5n-s3bc
Aliases:
CVE-2024-49769
GHSA-3f84-rpwh-47g6
PYSEC-2024-211
Waitress is a Web Server Gateway Interface server for Python 2 and 3. When a remote client closes the connection before waitress has had the opportunity to call getpeername() waitress won't correctly clean up the connection leading to the main thread attempting to write to a socket that no longer exists, but not removing it from the list of sockets to attempt to process. This leads to a busy-loop calling the write function. A remote attacker could run waitress out of available sockets with very little resources required. Waitress 3.0.1 contains fixes that remove the race condition.
3.0.1
Affected by 0 other vulnerabilities.
Vulnerabilities fixed by this package (0)
Vulnerability Summary Aliases
This package is not known to fix vulnerabilities.

Date Actor Action Vulnerability Source VulnerableCode Version
2026-06-02T04:22:27.588320+00:00 Pypa Importer Affected by VCID-ujpr-gc5n-s3bc https://github.com/pypa/advisory-database/blob/main/vulns/waitress/PYSEC-2024-211.yaml 38.6.0
2026-06-02T04:22:27.342907+00:00 Pypa Importer Affected by VCID-trp4-phyv-bfb2 https://github.com/pypa/advisory-database/blob/main/vulns/waitress/PYSEC-2024-210.yaml 38.6.0
2026-06-02T04:17:09.617626+00:00 Pypa Importer Affected by VCID-gnaw-ht2x-9bas https://github.com/pypa/advisory-database/blob/main/vulns/waitress/PYSEC-2022-169.yaml 38.6.0