BREW-CHARM-TOOLS-CVE-201… (GHSA-RV95-4WXJ-6FQQ)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:39 – Updated: 2026-09-09 23:46 – Source website
VLAI
Summary
Pylons Colander Denial of Service vulnerability
Details
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.
Severity
References
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "colander",
"resource_purl": "pkg:pypi/colander@1.8.3",
"upstream_fixed_in": "1.7.0"
},
"package": {
"ecosystem": "Homebrew",
"name": "charm-tools",
"purl": "pkg:brew/charm-tools"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.9"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/colander@1.8.3",
"name": "colander",
"resource": "colander",
"strategy": "registry",
"subject_version": "1.8.3"
}
]
},
"details": "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.",
"id": "BREW-charm-tools-CVE-2017-18361",
"modified": "2026-09-09T23:46:28Z",
"published": "2026-08-13T16:39:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-18361"
},
{
"type": "WEB",
"url": "https://github.com/Pylons/colander/issues/290"
},
{
"type": "WEB",
"url": "https://github.com/Pylons/colander/pull/323"
},
{
"type": "WEB",
"url": "https://github.com/Pylons/colander/commit/98805557c10ab5ff3016ed09aa2d48c49b9df40b"
},
{
"type": "PACKAGE",
"url": "https://github.com/Pylons/colander"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-rv95-4wxj-6fqq"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/colander/PYSEC-2019-167.yaml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Pylons Colander Denial of Service vulnerability",
"upstream": [
"GHSA-rv95-4wxj-6fqq",
"CVE-2017-18361",
"PYSEC-2019-167"
]
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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