GHSA-wqvq-5m8c-6g24 is a medium-severity (CVSS 6.5) CWE-74 vulnerability in urllib3. A fix is available for urllib3 — see the affected versions and patch details below.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
GHSA-wqvq-5m8c-6g24 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 385,738 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.
Real-World Exposure
urllib3Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
urllib3 before 1.25.9 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of putrequest(). NOTE: this is similar to CVE-2020-26116.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | urllib3 | all versions | 1.25.9pip install --upgrade 'urllib3==1.25.9' |
Affected Products
ubuntu linuxcanonicaldebian linuxdebiancommunications cloud native core network function cloud native environmentoraclezfs storage appliance kitoracleurllib3pythonDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for urllib3, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update urllib3 to 1.25.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-wqvq-5m8c-6g24 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
* Red Hat OpenShift Container Platform (OCP) 4 delivers the python-urllib3 package, which includes a vulnerable version of the urllib3 module, however from OCP 4.6, the python-urllib3 package is no longer shipped and will not be fixed. * In Red Hat OpenStack Platform, because the flaw has a lower impact and the fix…
| Product | Fixed in | Advisory |
|---|---|---|
| Red Hat Enterprise Linux 7 | python-0:2.7.5-92.el7_9 | RHSA-2022:5235 |
| Red Hat Enterprise Linux 8 | python27:2.7-8040020210122160212.cdb2db54 | RHSA-2021:1761 |
| Red Hat Enterprise Linux 8 | python-urllib3-0:1.24.2-5.el8 | RHSA-2021:1631 |
| Red Hat OpenShift Container Platform 3.11 | python-urllib3-0:1.26.2-1.el7 | RHSA-2021:0079 |
| Red Hat OpenShift Container Platform 4.5 | python-urllib3-0:1.26.2-1.el7 | RHSA-2021:0034 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | rh-python38-python-0:3.8.6-1.el7 | RHSA-2020:4299 |
Frequently Asked Questions
Is GHSA-wqvq-5m8c-6g24 in your dependencies?
Find it across PyPI, including transitive dependencies.