Technology · PyPI
waitress (PyPI) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 14 vulnerabilities in waitress (PyPI): 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2024-49769, was published on 29 October 2024.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 0
- Exploited in the wild
- 0
About waitress (PyPI)
Pure Python WSGI application server for serving HTTP requests.
Latest waitress (PyPI) vulnerabilities
- CVE-2024-49769: Waitress denial of service via unclean socket handlinglowCVSS 3.1EPSS 1.4%
- CVE-2024-49768: Waitress has request processing race condition in HTTP pipelining with invalid first requestlowCVSS 3.1EPSS 0.5%
- CVE-2022-31015: Uncaught Exception (due to a data race) leads to process termination in WaitresslowCVSS 3.1EPSS 1.5%
- CVE-2022-24761: HTTP Request Smuggling in waitresslowCVSS 3.1EPSS 1.8%
- CVE-2020-5236: Catastrophic backtracking in regex allows Denial of Service in WaitresslowCVSS 3.1EPSS 2.4%
- PYSEC-2020-197 - Waitress through version 1.3.1 allows request smuggling by sending the Content-Length header twice…info
- CVE-2019-16792: Duplicate Advisory: Inconsistent Interpretation of HTTP Requests in WaitresslowCVSS 3.1EPSS 2.0%
- CVE-2019-16789: HTTP Request Smuggling in Waitress: Invalid whitespace characters in headers (Follow-up)lowCVSS 3.1EPSS 2.6%
- PYSEC-2019-68 - In Waitress through version 1.4.0, if a proxy server is used in front of waitress, an invalid request…info
- HTTP Request Smuggling: Invalid whitespace characters in headers in Waitressinfo
- PYSEC-2019-66 - Waitress through version 1.3.1 implemented a "MAY" part of the RFC7230 which states: "Although the…info
- CVE-2019-16786: HTTP Request Smuggling: Invalid Transfer-Encoding in WaitresslowCVSS 3.1EPSS 2.4%
- PYSEC-2019-67 - Waitress through version 1.3.1 would parse the Transfer-Encoding header and only look for a single…info
- CVE-2019-16785: HTTP Request Smuggling: LF vs CRLF handling in WaitresslowCVSS 3.1EPSS 2.5%
Most severe waitress (PyPI) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2019-16789: HTTP Request Smuggling in Waitress: Invalid whitespace characters in headers (Follow-up)lowCVSS 3.1EPSS 2.6%
- CVE-2019-16785: HTTP Request Smuggling: LF vs CRLF handling in WaitresslowCVSS 3.1EPSS 2.5%
- CVE-2019-16786: HTTP Request Smuggling: Invalid Transfer-Encoding in WaitresslowCVSS 3.1EPSS 2.4%
- CVE-2020-5236: Catastrophic backtracking in regex allows Denial of Service in WaitresslowCVSS 3.1EPSS 2.4%
- CVE-2019-16792: Duplicate Advisory: Inconsistent Interpretation of HTTP Requests in WaitresslowCVSS 3.1EPSS 2.0%
- CVE-2022-24761: HTTP Request Smuggling in waitresslowCVSS 3.1EPSS 1.8%
- CVE-2022-31015: Uncaught Exception (due to a data race) leads to process termination in WaitresslowCVSS 3.1EPSS 1.5%
- CVE-2024-49769: Waitress denial of service via unclean socket handlinglowCVSS 3.1EPSS 1.4%
- CVE-2024-49768: Waitress has request processing race condition in HTTP pipelining with invalid first requestlowCVSS 3.1EPSS 0.5%
- PYSEC-2020-197 - Waitress through version 1.3.1 allows request smuggling by sending the Content-Length header twice…info
Vulnerabilities per week
Nothing was published in the last eight weeks. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many waitress (PyPI) vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/waitress)<a href="https://junglewise.ai/threats/technologies/waitress"><img src="https://junglewise.ai/threats/technologies/waitress/badge.svg" alt="waitress (PyPI) vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/waitress.json, and this page as text at https://junglewise.ai/threats/technologies/waitress.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "waitress (PyPI) vulnerabilities", https://junglewise.ai/threats/technologies/waitress, 13 November 2026.