UnratedFix available
urllib3 2.8.0
Type: patchSources: urllib3
urllib3 2.8.0 fixes three security issues involving HTTPS proxy TLS configuration, unbounded chunk-size buffering, and a possible infinite loop in Chunked Deflate streaming. It also adds safeguards in proxy tunneling for invalid characters.
- Products
- urllib3
- Affected versions
- Not specified
- Fixed versions
- 2.8.0
- CVEs
- Not specified
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 15:43 UTC · Revision 1
Source evidence
urllib3 2.8.0 fixes three security issues involving HTTPS proxy TLS configuration, unbounded chunk-size buffering, and a possible infinite loop in Chunked Deflate streaming. It also adds safeguards in proxy tunneling for invalid characters.
Security Fixed the following security issues: The TLS configuration for HTTPS proxies could be ignored or overridden. (High severity, GHSA-8988-9cw3-xx77) HTTPResponse.stream() and read_chunked() could buffer a chunk-size line of unbounded length in memory. (High severity, GHSA-vxq7-64xx-v4gw) Chunked Deflate streaming could enter an infinite loop. (Medium severity, GHSA-gh4c-6fx4-qh6g)
urllib3
Fixed versions: 2.8.0
Complete source record
{
"id": "50e3b00fb6b2459750111fd544eb5cb423d8da85660555052ea1c80b2d60976e",
"url": "https://github.com/urllib3/urllib3/releases/tag/2.8.0",
"method": "llm",
"payload": {
"kind": "patch",
"title": "urllib3 2.8.0",
"summary": "urllib3 2.8.0 fixes three security issues involving HTTPS proxy TLS configuration, unbounded chunk-size buffering, and a possible infinite loop in Chunked Deflate streaming. It also adds safeguards in proxy tunneling for invalid characters.",
"evidence": "Security Fixed the following security issues: The TLS configuration for HTTPS proxies could be ignored or overridden. (High severity, GHSA-8988-9cw3-xx77) HTTPResponse.stream() and read_chunked() could buffer a chunk-size line of unbounded length in memory. (High severity, GHSA-vxq7-64xx-v4gw) Chunked Deflate streaming could enter an infinite loop. (Medium severity, GHSA-gh4c-6fx4-qh6g)",
"products": [
{
"name": {
"value": "urllib3",
"evidence": "Release notes from urllib3"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.8.0",
"evidence": "2.8.0"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"fixed_cves": [],
"related_cves": [],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "github-urllib3-urllib3",
"document_id": 22811,
"published_at": "2026-09-15T19:40:51+00:00"
}