PatchTheCVECVE-2017-18869: A TOCTOU issue in the chownr package before 1.1.0 for Node.js 10.10 could allow a local attacker to trick it i
CVE-2017-18869 is a low-severity flaw (CVSS 2.5) affecting chownr. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A TOCTOU issue in the chownr package before 1.1.0 for Node.js 10.10 could allow a local attacker to trick it into descending into unintended directories via symlink attacks.
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 2.5 (Low) |
| Attack vector | Local |
| Attack complexity | High |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 73%) |
| CISA exploited list | No |
| Weakness | CWE-367 |
| Published | 2020-06-15 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
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-2017-18869?
chownr: upgrade to 1.1.0. Exact commands for each OS are on this page.
Is CVE-2017-18869 being exploited?
CVE-2017-18869 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-2017-18869 affect?
CVE-2017-18869 affects chownr. Severity is low (CVSS 2.5). A TOCTOU issue in the chownr package before 1.1.0 for Node.js 10.10 could allow a local attacker to trick it into descending into unintended directories via symlink attacks.
How urgent is CVE-2017-18869?
Priority 20/100. Public exploit reference