python: Fix of 4 CVEs
- CVE-2019-9740: reject control characters in HTTP URL paths in httplib.HTTPConnection.putrequest to prevent CRLF header injection - CVE-2019-18348: reject control characters in hostnames in httplib.HTTPConnection.__init__ via a new _validate_host helper to prevent CRLF header injection (the glibc CVE-2016-10739 mitigation shipped on RHEL 7+ is not present on CentOS 6 / Oracle Linux 6 ELS) - CVE-2018-1000030: cache the readahead buffer thread-locally inside file_iternext to fix heap buffer corruption and crashes when multiple threads iterate over the same file object
- Products
- python, python-devel, python-libs, python-test, python-tools, tkinter
- Affected versions
- Not specified
- Fixed versions
- 2.6.6-70.el6.tuxcare.els22
- CVEs
- CVE-2016-10739, CVE-2018-1000030, CVE-2019-18348, CVE-2019-9740
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 13:54 UTC · Revision 1
Source evidence
- CVE-2019-9740: reject control characters in HTTP URL paths in httplib.HTTPConnection.putrequest to prevent CRLF header injection - CVE-2019-18348: reject control characters in hostnames in httplib.HTTPConnection.__init__ via a new _validate_host helper to prevent CRLF header injection (the glibc CVE-2016-10739 mitigation shipped on RHEL 7+ is not present on CentOS 6 / Oracle Linux 6 ELS) - CVE-2018-1000030: cache the readahead buffer thread-locally inside file_iternext to fix heap buffer corruption and crashes when multiple threads iterate over the same file object
osv:CLSA-2026-1778769563
python
Fixed versions: 2.6.6-70.el6.tuxcare.els22
python-devel
Fixed versions: 2.6.6-70.el6.tuxcare.els22
python-libs
Fixed versions: 2.6.6-70.el6.tuxcare.els22
python-test
Fixed versions: 2.6.6-70.el6.tuxcare.els22
python-tools
Fixed versions: 2.6.6-70.el6.tuxcare.els22
tkinter
Fixed versions: 2.6.6-70.el6.tuxcare.els22
Complete source record
{
"id": "e5c6d678066b6a37fcb4ba80cb4ec1195e431e850800c65a4e79985831ef379e",
"url": "https://osv.dev/vulnerability/CLSA-2026-1778769563",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "python: Fix of 4 CVEs",
"summary": "- CVE-2019-9740: reject control characters in HTTP URL paths in httplib.HTTPConnection.putrequest to prevent CRLF header injection - CVE-2019-18348: reject control characters in hostnames in httplib.HTTPConnection.__init__ via a new _validate_host helper to prevent CRLF header injection (the glibc CVE-2016-10739 mitigation shipped on RHEL 7+ is not present on CentOS 6 / Oracle Linux 6 ELS) - CVE-2018-1000030: cache the readahead buffer thread-locally inside file_iternext to fix heap buffer corruption and crashes when multiple threads iterate over the same file object",
"evidence": "osv:CLSA-2026-1778769563",
"products": [
{
"name": {
"value": "python",
"evidence": "/affected/0/package/name"
},
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"evidence": "/affected/0/ranges"
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{
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{
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{
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"affected_versions": []
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{
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],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1778769563",
"aliases": [
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"affected": [
{
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"package": {
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"database_specific": {
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"package": {
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"package": {
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"package": {
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"ecosystem": "TuxCare:CentOS:6"
},
"database_specific": {
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}
},
{
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"package": {
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"purl": "pkg:rpm/tuxcare/tkinter?distro=centos-6",
"ecosystem": "TuxCare:CentOS:6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos6els/CLSA-2026-1778769563.json"
}
}
],
"modified": "2026-10-21T10:47:53.033975359Z",
"provider": "osv",
"upstream": [
"CVE-2016-10739",
"CVE-2018-1000030",
"CVE-2019-18348",
"CVE-2019-9740"
],
"references": [
"https://errata.tuxcare.com/els_os/centos6els/CLSA-2026-1778769563.html"
]
},
"related_cves": [
{
"value": "CVE-2016-10739",
"evidence": "/upstream"
},
{
"value": "CVE-2018-1000030",
"evidence": "/upstream"
},
{
"value": "CVE-2019-18348",
"evidence": "/upstream"
},
{
"value": "CVE-2019-9740",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 392429,
"published_at": "2026-05-14T19:23:48+00:00"
}