UnratedFix available
Fixed CVEs in python: CVE-2018-20852, CVE-2020-8492, CVE-2020-26116, CVE-2020-27619
Type: advisorySources: OSV
- Add Oracle Linux distribution in platform.py - CVE-2018-20852: Prefix dot in domain for proper subdomain validation - CVE-2020-8492: Python allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client - CVE-2020-26116: http.client allows CRLF injection if the attacker controls the HTTP request method - CVE-2020-27619: Unsafe use of eval() on data retrieved via HTTP in the test suite
- Products
- python, python-devel, python-libs, python-test, python-tools, tkinter
- Affected versions
- Not specified
- Fixed versions
- 2.6.6-70.el6.cloudlinux.els
- CVEs
- CVE-2018-20852, CVE-2020-26116, CVE-2020-27619, CVE-2020-8492
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 13:55 UTC · Revision 1
Source evidence
Fixed CVEs in python: CVE-2018-20852, CVE-2020-8492, CVE-2020-26116, CVE-2020-27619
core-osv · Original sourcePublished 22 Oct 2021, 17:58 UTC
- Add Oracle Linux distribution in platform.py - CVE-2018-20852: Prefix dot in domain for proper subdomain validation - CVE-2020-8492: Python allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client - CVE-2020-26116: http.client allows CRLF injection if the attacker controls the HTTP request method - CVE-2020-27619: Unsafe use of eval() on data retrieved via HTTP in the test suite
osv:CLSA-2021-1634925483
python
Fixed versions: 2.6.6-70.el6.cloudlinux.els
python-devel
Fixed versions: 2.6.6-70.el6.cloudlinux.els
python-libs
Fixed versions: 2.6.6-70.el6.cloudlinux.els
python-test
Fixed versions: 2.6.6-70.el6.cloudlinux.els
python-tools
Fixed versions: 2.6.6-70.el6.cloudlinux.els
tkinter
Fixed versions: 2.6.6-70.el6.cloudlinux.els
Complete source record
{
"id": "014f3f8a8efe7eb41930291da1a4abdd1239d3d0104113af4440f18685a398ea",
"url": "https://osv.dev/vulnerability/CLSA-2021-1634925483",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fixed CVEs in python: CVE-2018-20852, CVE-2020-8492, CVE-2020-26116, CVE-2020-27619",
"summary": "- Add Oracle Linux distribution in platform.py - CVE-2018-20852: Prefix dot in domain for proper subdomain validation - CVE-2020-8492: Python allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client - CVE-2020-26116: http.client allows CRLF injection if the attacker controls the HTTP request method - CVE-2020-27619: Unsafe use of eval() on data retrieved via HTTP in the test suite",
"evidence": "osv:CLSA-2021-1634925483",
"products": [
{
"name": {
"value": "python",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.6.6-70.el6.cloudlinux.els",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python-devel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.6.6-70.el6.cloudlinux.els",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python-libs",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.6.6-70.el6.cloudlinux.els",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python-test",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.6.6-70.el6.cloudlinux.els",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python-tools",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.6.6-70.el6.cloudlinux.els",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "tkinter",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.6.6-70.el6.cloudlinux.els",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2021-1634925483",
"aliases": [
"CLSA-2021-1634925483"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.6.6-70.el6.cloudlinux.els"
}
]
}
],
"package": {
"name": "python",
"purl": "pkg:rpm/tuxcare/python?distro=oraclelinux-6",
"ecosystem": "TuxCare:OracleLinux:6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2021-1634925483.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.6.6-70.el6.cloudlinux.els"
}
]
}
],
"package": {
"name": "python-devel",
"purl": "pkg:rpm/tuxcare/python-devel?distro=oraclelinux-6",
"ecosystem": "TuxCare:OracleLinux:6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2021-1634925483.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.6.6-70.el6.cloudlinux.els"
}
]
}
],
"package": {
"name": "python-libs",
"purl": "pkg:rpm/tuxcare/python-libs?distro=oraclelinux-6",
"ecosystem": "TuxCare:OracleLinux:6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2021-1634925483.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.6.6-70.el6.cloudlinux.els"
}
]
}
],
"package": {
"name": "python-test",
"purl": "pkg:rpm/tuxcare/python-test?distro=oraclelinux-6",
"ecosystem": "TuxCare:OracleLinux:6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2021-1634925483.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.6.6-70.el6.cloudlinux.els"
}
]
}
],
"package": {
"name": "python-tools",
"purl": "pkg:rpm/tuxcare/python-tools?distro=oraclelinux-6",
"ecosystem": "TuxCare:OracleLinux:6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2021-1634925483.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.6.6-70.el6.cloudlinux.els"
}
]
}
],
"package": {
"name": "tkinter",
"purl": "pkg:rpm/tuxcare/tkinter?distro=oraclelinux-6",
"ecosystem": "TuxCare:OracleLinux:6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2021-1634925483.json"
}
}
],
"modified": "2026-10-21T10:48:01.334649814Z",
"provider": "osv",
"upstream": [
"CVE-2018-20852",
"CVE-2020-26116",
"CVE-2020-27619",
"CVE-2020-8492"
],
"references": [
"https://errata.cloudlinux.com/ol6/CLSA-2021-1634925483.html"
]
},
"related_cves": [
{
"value": "CVE-2018-20852",
"evidence": "/upstream"
},
{
"value": "CVE-2020-26116",
"evidence": "/upstream"
},
{
"value": "CVE-2020-27619",
"evidence": "/upstream"
},
{
"value": "CVE-2020-8492",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 392499,
"published_at": "2021-10-22T17:58:03+00:00"
}