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HIGH

CVE-2017-18361

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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