PatchTheCVECVE-2017-16115: The timespan module is vulnerable to regular expression denial of service
CVE-2017-16115 is a high-severity flaw (CVSS 7.5) affecting timespan. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The timespan module is vulnerable to regular expression denial of service. Given 50k characters of untrusted user input it will block the event loop for around 10 seconds.
Why this priority
- High severity
- Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.5% (top 26%) |
| 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-2017-16115?
timespan: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2017-16115 being exploited?
CVE-2017-16115 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-2017-16115 affect?
CVE-2017-16115 affects timespan. Severity is high (CVSS 7.5). The timespan module is vulnerable to regular expression denial of service. Given 50k characters of untrusted user input it will block the event loop for around 10 seconds.
How urgent is CVE-2017-16115?
Priority 50/100. High severity; Remotely exploitable, no login, no user action