CVE-2020-26289 is a high-severity (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in date-and-time. A fix is available for date-and-time — see the affected versions and patch details below.
regular expression denial of service (ReDoS)
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
CVE-2020-26289 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 385,987 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.
date-and-timenpmDescription
date-and-time is an npm package for manipulating date and time. In date-and-time before version 0.14.2, there a regular expression involved in parsing which can be exploited to to cause a denial of service. This is fixed in version 0.14.2.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | date-and-time | all versions | 0.14.2npm install date-and-time@0.14.2 |
Affected Products
date-and-timedate-and-time_projectDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for date-and-time, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update date-and-time to 0.14.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-26289 is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.
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.
| Product | Fixed in | Advisory |
|---|---|---|
| Red Hat OpenShift Container Storage 4.7.0 on RHEL-8 | ocs4/mcg-core-rhel8:5.7.0-60.2c1fdb0.5.7 | RHSA-2021:2041 |
Frequently Asked Questions
Is CVE-2020-26289 in your dependencies?
Find it across npm, including transitive dependencies.