CVSS v3
7.5
HIGH
EPSS Score
1.8 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
In Pylons Colander through 1.6, the URL validator allows an attacker to potentially cause an infinite loop thereby causing a denial of service via an unclosed parenthesis.
Technical details
- Published
- 2019-02-01
Frequently asked questions
What is CVE-2017-18361?
In Pylons Colander through 1.6, the URL validator allows an attacker to potentially cause an infinite loop thereby causing a denial of service via an unclosed parenthesis.
Is CVE-2017-18361 actively exploited?
Active exploitation of CVE-2017-18361 has not been confirmed. Its EPSS score was 1.8% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2017-18361?
CVE-2017-18361 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2017-18361 affecting your environment?
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