Critical
Security advisory
CPython (aka Python) up to 2.7.13 is vulnerable to an integer overflow in the PyString_DecodeEscape function in stringobject.c, resulting in heap-based buffer overflow (and possible arbitrary code execution)
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2017-1000158
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:24 UTC · Revision 1
Source evidence
CPython (aka Python) up to 2.7.13 is vulnerable to an integer overflow in the PyString_DecodeEscape function in stringobject.c, resulting in heap-based buffer overflow (and possible arbitrary code execution)
osv:CVE-2017-1000158
Complete source record
{
"id": "fcc63b69c7994c41439d82005119c3a73094e6a35cef6a7d732b5103e63a3f3c",
"url": "https://osv.dev/vulnerability/CVE-2017-1000158",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2017-1000158",
"summary": "CPython (aka Python) up to 2.7.13 is vulnerable to an integer overflow in the PyString_DecodeEscape function in stringobject.c, resulting in heap-based buffer overflow (and possible arbitrary code execution)",
"evidence": "osv:CVE-2017-1000158",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2017-1000158",
"aliases": [
"CVE-2017-1000158",
"PSF-2017-6"
],
"metrics": [
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"type": "CVSS_V3",
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"database_specific": {
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],
"modified": "2026-10-24T10:30:52.692365550Z",
"provider": "osv",
"references": [
"https://lists.debian.org/debian-lts-announce/2017/11/msg00035.html",
"https://lists.debian.org/debian-lts-announce/2017/11/msg00036.html",
"https://lists.debian.org/debian-lts-announce/2018/09/msg00030.html",
"https://lists.debian.org/debian-lts-announce/2018/09/msg00031.html",
"https://security.gentoo.org/glsa/201805-02",
"https://security.netapp.com/advisory/ntap-20230216-0001/",
"https://www.debian.org/security/2018/dsa-4307",
"https://bugs.python.org/issue30657"
],
"provider_metadata": {
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"related_cves": [
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"evidence": "/id"
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},
"source_id": "core-osv",
"document_id": 437760,
"published_at": "2017-11-17T05:29:00.28+00:00"
}