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CVE-2019-13611: An issue was discovered in python-engineio through 3.8.2

45
This month
HIGH 8.8UPGRADE

CVE-2019-13611 is a high-severity flaw (CVSS 8.8) affecting python-engineio. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in python-engineio through 3.8.2. There is a Cross-Site WebSocket Hijacking (CSWSH) vulnerability that allows attackers to make WebSocket connections to a server by using a victim's credentials, because the Origin header is not restricted.

Why this priority

  • High severity

A fixed release or distro patch exists.

Risk facts

CVSS score8.8 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionRequired
EPSS exploit chance0.9% (top 42%)
CISA exploited listNo
WeaknessCWE-352
Published2019-07-16
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: python-engineio project

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

Am I affected?

Timeline

python-engineio project python-engineio UPGRADE
Affected: <= 3.8.2
Fixed in: newer than 3.8.2
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy python-engineio || rpm -q python-engineio || python-engineio --version
2. UPGRADE to newer than 3.8.2 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade python-engineio
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade python-engineio
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-2019-13611?

python-engineio: upgrade to newer than 3.8.2. Exact commands for each OS are on this page.

Is CVE-2019-13611 being exploited?

CVE-2019-13611 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-2019-13611 affect?

CVE-2019-13611 affects python-engineio. Severity is high (CVSS 8.8). An issue was discovered in python-engineio through 3.8.2. There is a Cross-Site WebSocket Hijacking (CSWSH) vulnerability that allows attackers to make WebSocket connections to a server by using a victim's credentials, because the Origin he

How urgent is CVE-2019-13611?

Priority 45/100. High severity

Software pages

Python vulnerabilities

References

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