CVE-2017-16117
Regular Expression Denial of Service in slug
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2017-16117- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-400
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2017-16117- Weakness
- CWE-400
- Updated
- 2026-11-02
EUVDEUVD-2018-0292 No score
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.
- Record
EUVD-2018-0292- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jxqq-cqm6-pfq9 No score
Regular Expression Denial of Service in slug
Affected versions of slug are vulnerable to a regular expression denial of service when parsing untrusted user input.
The issue is low severity, as it takes 50,000 characters to cause the event loop to block for 2 seconds,
About 50k characters can block the event loop for 2 seconds.
Recommendation
Update to version 0.9.2 or later.
- Record
GHSA-jxqq-cqm6-pfq9- Weakness
- CWE-400
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2017-16117- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-jxqq-cqm6-pfq9 No score
Regular Expression Denial of Service in slug
Affected versions of slug are vulnerable to a regular expression denial of service when parsing untrusted user input.
The issue is low severity, as it takes 50,000 characters to cause the event loop to block for 2 seconds,
About 50k characters can block the event loop for 2 seconds.
Recommendation
Update to version 0.9.2 or later.
- Record
GHSA-jxqq-cqm6-pfq9- Weakness
- CWE-400
- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2017-16117 is a high vulnerability (CVSS 7.5) in Slug Project Slug, published June 7, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.56%, the 75th percentile. Fixed in slug 0.9.2.