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No exploitation reportedFix available

CVE-2017-18361

No exploitation reported by the sources we read.

  • Published2019-02-01
  • Fixed in1.7.0
  • WeaknessCWE-835

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2019-02-0109:29CVE publishedNVD

Versions per branch

OSV · NVD
colander
BranchAffectedFixed in
1.7< 1.7.01.7.0
Pylonsproject colander
BranchAffectedFixed in
1.6≤ 1.6no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • python-colanderUbuntu:16.04:LTSall versions · no fixed version listed
  • python-colanderopenSUSE:Tumbleweedall versions · fixed in 2.0-1.3
  • python-colanderopenSUSE:Tumbleweedall versions · fixed in 2.0-2.4

Vendor advisories

  • CVE-2017-18361 Red Hat Product Security

    python-colander: infinite loop in the URL validator

Full record on NVD

Fix

  1. Update colander to 1.7.0

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2019-02-01
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-rv95-4wxj-6fqq

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 2.1% on 2026-11-08, 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), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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Sources for this record