OPENSUSE-RU-2026:20649-1
Vulnerability from csaf_opensuse - Published: 2026-04-29 14:14 - Updated: 2026-09-17 16:49Summary
Recommended update for python-urllib3
Severity
Moderate
Notes
Title of the patch: Recommended update for python-urllib3
Description of the patch: This update for python-urllib3 fixes the following issue:
- Fix regression in CVE-2025-66471.patch (bsc#1254867)
Patchnames: openSUSE-Leap-16.0-657
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
5.3 (Medium)
Affected products
Recommended
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: openSUSE Leap 16.0:python313-urllib3-0:2.5.0-160000.5.1.noarch | — |
Vendor Fix
|
Threats
Impact
moderate
References
14 references
| URL | Category |
|---|---|
| https://www.suse.com/support/security/rating/ | external |
| https://ftp.suse.com/pub/projects/security/csaf/o… | self |
| https://bugzilla.suse.com/1254867 | self |
| https://www.suse.com/security/cve/CVE-2025-66471/ | self |
| https://www.suse.com/security/cve/CVE-2025-66471 | external |
| https://bugzilla.suse.com/1254867 | external |
| https://bugzilla.suse.com/1259829 | external |
| https://bugzilla.suse.com/1262592 | external |
| https://bugzilla.suse.com/1264973 | external |
| https://bugzilla.suse.com/1268540 | external |
| https://bugzilla.suse.com/1268683 | external |
| https://bugzilla.suse.com/1272161 | external |
| https://bugzilla.suse.com/1274606 | external |
| https://bugzilla.suse.com/1277189 | external |
{
"document": {
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"text": "moderate"
},
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"distribution": {
"text": "Copyright 2024 SUSE LLC. All rights reserved.",
"tlp": {
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"notes": [
{
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"text": "Recommended update for python-urllib3",
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},
{
"category": "description",
"text": "This update for python-urllib3 fixes the following issue:\n\n- Fix regression in CVE-2025-66471.patch (bsc#1254867)\n",
"title": "Description of the patch"
},
{
"category": "details",
"text": "openSUSE-Leap-16.0-657",
"title": "Patchnames"
},
{
"category": "legal_disclaimer",
"text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
"title": "Terms of use"
}
],
"publisher": {
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{
"category": "external",
"summary": "SUSE ratings",
"url": "https://www.suse.com/support/security/rating/"
},
{
"category": "self",
"summary": "URL of this CSAF notice",
"url": "https://ftp.suse.com/pub/projects/security/csaf/opensuse-ru-2026_20649-1.json"
},
{
"category": "self",
"summary": "SUSE Bug 1254867",
"url": "https://bugzilla.suse.com/1254867"
},
{
"category": "self",
"summary": "SUSE CVE CVE-2025-66471 page",
"url": "https://www.suse.com/security/cve/CVE-2025-66471/"
}
],
"title": "Recommended update for python-urllib3",
"tracking": {
"current_release_date": "2026-09-17T16:49:24Z",
"generator": {
"date": "2026-04-29T14:14:09Z",
"engine": {
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},
"id": "openSUSE-RU-2026:20649-1",
"initial_release_date": "2026-04-29T14:14:09Z",
"revision_history": [
{
"date": "2026-04-29T14:14:09Z",
"number": "1",
"summary": "Current version"
},
{
"date": "2026-09-16T19:55:27Z",
"number": "2",
"summary": "unknown changes"
},
{
"date": "2026-09-16T20:58:25Z",
"number": "3",
"summary": "unknown changes"
},
{
"date": "2026-09-17T16:49:24Z",
"number": "4",
"summary": "unknown changes"
}
],
"status": "final",
"version": "4"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version",
"name": "python313-urllib3-0:2.5.0-160000.5.1.noarch",
"product": {
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"cpe": "cpe:2.3:a:python:urllib3:2.5.0:*:*:*:*:*:*:*",
"purl": "pkg:rpm/suse/python313-urllib3@2.5.0-160000.5.1?arch=noarch\u0026upstream=python-urllib3-0:2.5.0-160000.5.1.src.rpm"
}
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],
"category": "architecture",
"name": "noarch"
},
{
"branches": [
{
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"product": {
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],
"category": "product_family",
"name": "SUSE Linux Enterprise"
}
],
"category": "vendor",
"name": "SUSE"
}
],
"relationships": [
{
"category": "default_component_of",
"full_product_name": {
"name": "python313-urllib3-0:2.5.0-160000.5.1.noarch as component of openSUSE Leap 16.0",
"product_id": "openSUSE Leap 16.0:python313-urllib3-0:2.5.0-160000.5.1.noarch"
},
"product_reference": "python313-urllib3-0:2.5.0-160000.5.1.noarch",
"relates_to_product_reference": "openSUSE Leap 16.0"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2025-66471",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2025-66471"
}
],
"notes": [
{
"category": "general",
"text": "urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.0 and prior to 2.6.0, the Streaming API improperly handles highly compressed data. urllib3\u0027s streaming API is designed for the efficient handling of large HTTP responses by reading the content in chunks, rather than loading the entire response body into memory at once. When streaming a compressed response, urllib3 can perform decoding or decompression based on the HTTP Content-Encoding header (e.g., gzip, deflate, br, or zstd). The library must read compressed data from the network and decompress it until the requested chunk size is met. Any resulting decompressed data that exceeds the requested amount is held in an internal buffer for the next read operation. The decompression logic could cause urllib3 to fully decode a small amount of highly compressed data in a single operation. This can result in excessive resource consumption (high CPU usage and massive memory allocation for the decompressed data.",
"title": "CVE description"
}
],
"product_status": {
"recommended": [
"openSUSE Leap 16.0:python313-urllib3-0:2.5.0-160000.5.1.noarch"
]
},
"references": [
{
"category": "external",
"summary": "CVE-2025-66471",
"url": "https://www.suse.com/security/cve/CVE-2025-66471"
},
{
"category": "external",
"summary": "SUSE Bug 1254867 for CVE-2025-66471",
"url": "https://bugzilla.suse.com/1254867"
},
{
"category": "external",
"summary": "SUSE Bug 1259829 for CVE-2025-66471",
"url": "https://bugzilla.suse.com/1259829"
},
{
"category": "external",
"summary": "SUSE Bug 1262592 for CVE-2025-66471",
"url": "https://bugzilla.suse.com/1262592"
},
{
"category": "external",
"summary": "SUSE Bug 1264973 for CVE-2025-66471",
"url": "https://bugzilla.suse.com/1264973"
},
{
"category": "external",
"summary": "SUSE Bug 1268540 for CVE-2025-66471",
"url": "https://bugzilla.suse.com/1268540"
},
{
"category": "external",
"summary": "SUSE Bug 1268683 for CVE-2025-66471",
"url": "https://bugzilla.suse.com/1268683"
},
{
"category": "external",
"summary": "SUSE Bug 1272161 for CVE-2025-66471",
"url": "https://bugzilla.suse.com/1272161"
},
{
"category": "external",
"summary": "SUSE Bug 1274606 for CVE-2025-66471",
"url": "https://bugzilla.suse.com/1274606"
},
{
"category": "external",
"summary": "SUSE Bug 1277189 for CVE-2025-66471",
"url": "https://bugzilla.suse.com/1277189"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
"openSUSE Leap 16.0:python313-urllib3-0:2.5.0-160000.5.1.noarch"
]
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
},
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"openSUSE Leap 16.0:python313-urllib3-0:2.5.0-160000.5.1.noarch"
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],
"threats": [
{
"category": "impact",
"date": "2026-04-29T14:14:09Z",
"details": "moderate"
}
],
"title": "CVE-2025-66471"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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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