PatchTheCVECVE-2017-16117: slug is a module to slugify strings, even if they contain unicode
CVE-2017-16117 is a high-severity flaw (CVSS 7.5) affecting slug. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
slug is a module to slugify strings, even if they contain unicode. slug is vulnerable to regular expression denial of service is specially crafted untrusted input is passed as input. About 50k characters can block the event loop for 2 seconds.
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.6% (top 25%) |
| CISA exploited list | No |
| Weakness | CWE-400 |
| Published | 2018-06-07 |
| 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-2017-16117?
slug: upgrade to newer than 0.9.1. Exact commands for each OS are on this page.
Is CVE-2017-16117 being exploited?
CVE-2017-16117 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-2017-16117 affect?
CVE-2017-16117 affects slug. Severity is high (CVSS 7.5). slug is a module to slugify strings, even if they contain unicode. slug is vulnerable to regular expression denial of service is specially crafted untrusted input is passed as input. About 50k characters can block the event loop for 2 secon
How urgent is CVE-2017-16117?
Priority 50/100. High severity; Remotely exploitable, no login, no user action