CVE-2021-35065 is a high-severity (CVSS 7.5) CWE-1333 vulnerability in glob-parent. 2 public exploit or proof-of-concept references are indexed, so weaponization risk is real. A fix is available for glob-parent — see the affected versions and patch details below.
glob-parent 6.0.0 vulnerable to Regular Expression Denial of Service
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
Exploitation and automatability from CISA’s SSVC triage for CVE-2021-35065.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
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.
glob-parentnpmDescription
glob-parent 6.0.0 is vulnerable to Regular Expression Denial of Service (ReDoS). This issue is fixed in version 6.0.1.
This vulnerability is separate from GHSA-ww39-953v-wcq6.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | glob-parent | ≥ 6.0.0&&< 6.0.1 | 6.0.1npm install glob-parent@6.0.1 |
Affected Products
glob-parentgulpjsResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for glob-parent, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update glob-parent to 6.0.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-35065 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.
The glob-parent package is a transitive dependency and this is not used directly in any of the Red Hat products. Hence, the impact is reduced to Moderate.
| Product | Fixed in | Advisory |
|---|---|---|
| MTA-6.0-RHEL-8 | mta/mta-ui-rhel8:6.0.1-10 | RHSA-2023:0934 |
| Red Hat Enterprise Linux 8 | nodejs:16-8070020230314140722.bd1311ed | RHSA-2023:1582 |
| Red Hat Enterprise Linux 8 | nodejs:18-8070020230322080930.bd1311ed | RHSA-2023:1583 |
| Red Hat Enterprise Linux 8 | nodejs:14-8070020230306170042.bd1311ed | RHSA-2023:1743 |
| Red Hat Enterprise Linux 8.4 Extended Update Support | nodejs:14-8040020230306170312.522a0ee4 | RHSA-2023:1533 |
| Red Hat Enterprise Linux 8.6 Extended Update Support | nodejs:14-8060020230306170237.ad008a3a | RHSA-2023:1742 |
| Red Hat Enterprise Linux 9 | nodejs:18-9020020230327152102.rhel9 | RHSA-2023:2654 |
| Red Hat Enterprise Linux 9 | nodejs-1:16.19.1-1.el9_2 | RHSA-2023:2655 |
Frequently Asked Questions
Is CVE-2021-35065 in your dependencies?
Find it across npm, including transitive dependencies.