Disclosure summary
python before versions 2.7.15, 3.4.9, 3.5.6rc1, 3.6.5rc1 and 3.7.0 is vulnerable to catastrophic backtracking in pop3lib's apop() method. An attacker could use this flaw to cause denial of service.
Source-reported weakness categories
CWE-20, NVD-CWE-noinfo
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST NVD · NVD-CVE-2018-1060
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| python | python | * · versionStartExcluding: 3.6.0 · versionEndExcluding: 3.6.5 |
| fedoraproject | fedora | 28 |
| fedoraproject | fedora | 29 |
| fedoraproject | fedora | 30 |
| canonical | ubuntu_linux | 12.04 |
| canonical | ubuntu_linux | 14.04 |
| canonical | ubuntu_linux | 16.04 |
| canonical | ubuntu_linux | 18.04 |
| redhat | ansible_tower | 3.3 |
| redhat | enterprise_linux_desktop | 7.0 |
| redhat | enterprise_linux_server | 7.0 |
| redhat | enterprise_linux_workstation | 7.0 |
| debian | debian_linux | 8.0 |
| debian | debian_linux | 9.0 |
NIST NVD · nvd:CVE-2018-1060
Open original source · Updated Oct 08, 2026
python before versions 2.7.15, 3.4.9, 3.5.6rc1, 3.6.5rc1 and 3.7.0 is vulnerable to catastrophic backtracking in pop3lib's apop() method. An attacker could use this flaw to cause denial of service.
Source severity: HIGH / 7.5
Indexed product associations
These cached associations support search and triage. Confirm applicability, platform conditions, and fixed versions in the original record.
| Vendor | Product | Version | Source / relationship |
|---|---|---|---|
| canonical | ubuntu linux | 12.04 | nvd / vulnerable |
| canonical | ubuntu linux | 14.04 | nvd / vulnerable |
| canonical | ubuntu linux | 16.04 | nvd / vulnerable |
| canonical | ubuntu linux | 18.04 | nvd / vulnerable |
| debian | debian linux | 8.0 | nvd / vulnerable |
| debian | debian linux | 9.0 | nvd / vulnerable |
| fedoraproject | fedora | 28 | nvd / vulnerable |
| fedoraproject | fedora | 29 | nvd / vulnerable |
| fedoraproject | fedora | 30 | nvd / vulnerable |
| python | python | * | nvd / vulnerable |
| redhat | ansible tower | 3.3 | nvd / vulnerable |
| redhat | enterprise linux desktop | 7.0 | nvd / vulnerable |
| redhat | enterprise linux server | 7.0 | nvd / vulnerable |
| redhat | enterprise linux workstation | 7.0 | nvd / vulnerable |
Original records & references
- NIST NVD record
- CVE Program record
- secalert@redhat.com — Third Party Advisory
- secalert@redhat.com — Third Party Advisory
- secalert@redhat.com — Third Party Advisory
- secalert@redhat.com — Third Party Advisory
- secalert@redhat.com — Third Party Advisory
- secalert@redhat.com — Exploit, Issue Tracking, Vendor Advisory
- secalert@redhat.com — Issue Tracking, Third Party Advisory
- secalert@redhat.com — Mailing List, Third Party Advisory
- secalert@redhat.com — Mailing List, Third Party Advisory
- secalert@redhat.com
- secalert@redhat.com
- secalert@redhat.com
- secalert@redhat.com — Third Party Advisory
- secalert@redhat.com — Third Party Advisory
- secalert@redhat.com — Third Party Advisory
- secalert@redhat.com — Third Party Advisory
- secalert@redhat.com — Third Party Advisory
- secalert@redhat.com — Third Party Advisory
GitHub repository matches
Repository matches are links and GitHub-supplied metadata only. They are not verified working proof-of-concept code. Each supported query is bounded to ten pages and at most 1,000 indexed results. This is not a complete index of GitHub or public exploit research. Coverage can also be limited by provider availability, rate limits, rejected metadata, incomplete search results, manual review, and the recorded refresh time.
No stored repository matches
Repository discovery has not recorded an update for this CVE yet.
Discovery progress
0 of 3 discovery queries finished. GitHub returned 0 indexed results; 0 malformed or disallowed results were rejected.
No discovery update has been recorded for this CVE.
View all 0 stored repository matches
PUBLISHED 2018-06-18T14:29:00+00:00
MODIFIED 2026-10-08T21:17:08+00:00
INGESTED 2026-10-12T05:28:42+00:00