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.
CVE-2017-18361
HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 68% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 7.5Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 75.4%
- KEV
- Not listed
Published
February 1, 2019
Last Modified
November 21, 2024
References (4)
- cve@mitrehttps://github.com/Pylons/colander/issues/290
- cve@mitrehttps://github.com/Pylons/colander/pull/323
- af854a3a-2127-422b-91ae-364da2661108https://github.com/Pylons/colander/issues/290
- af854a3a-2127-422b-91ae-364da2661108https://github.com/Pylons/colander/pull/323
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Frequently asked(5)
What is CVE-2017-18361?
CVE-2017-18361 is a high vulnerability published on February 1, 2019. 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.
When was CVE-2017-18361 disclosed?
CVE-2017-18361 was first published in the National Vulnerability Database on February 1, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-18361 actively exploited?
CVE-2017-18361 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 75.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-18361?
CVE-2017-18361 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2017-18361?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-18361, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2017-18361
Is Your Infrastructure Affected by CVE-2017-18361?
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