CVE-2024-49769: Waitress is a Web Server Gateway Interface server for Python 2 and 3

Q: How do I fix CVE-2024-49769?

waitress: upgrade to 3.0.1. Exact commands for each OS are on this page.

Q: Is CVE-2024-49769 being exploited?

CVE-2024-49769 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-49769 affect?

CVE-2024-49769 affects waitress. Severity is high (CVSS 7.5). 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 m

Q: How urgent is CVE-2024-49769?

Priority 49/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2024-49769 is a high-severity flaw (CVSS 7.5) affecting waitress. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 coul

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-772
Published	2024-10-29
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: agendaless

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-10-29 15:15 UTCPublished CVE record published
2026-06-17 08:00 UTCUpdated Record last modified

agendaless waitress UPGRADE

Affected: < 3.0.1

Fixed in: 3.0.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy waitress || rpm -q waitress || waitress --version

2. UPGRADE to 3.0.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade waitress

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade waitress

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-49769?

waitress: upgrade to 3.0.1. Exact commands for each OS are on this page.

Is CVE-2024-49769 being exploited?

CVE-2024-49769 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-49769 affect?

CVE-2024-49769 affects waitress. Severity is high (CVSS 7.5). 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 m

How urgent is CVE-2024-49769?

Priority 49/100. High severity; Remotely exploitable, no login, no user action

Software pages

Python vulnerabilities

Related CVEs

CVE-2024-49768 CRITICAL 9.1 UPGRADE Waitress is a Web Server Gateway Interface server for Python 2 and 3

References

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