Updated: 2025-08-20 00:36:29.222286
Description:
Python's elementtree C accelerator failed to initialise Expat's hash salt during initialization. This could make it easy to conduct denial of service attacks against Expat by constructing an XML document that would cause pathological hash collisions in Expat's internal data structures, consuming large amounts CPU and RAM. The vulnerability exists in Python versions 3.7.0, 3.6.0 through 3.6.6, 3.5.0 through 3.5.6, 3.4.0 through 3.4.9, 2.7.0 through 2.7.15.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | MEDIUM | 5.0 |
| CVSS Version 3.x | HIGH | 7.5 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| Alpine Linux 3.22 | python | 3.7 | 7.5 | HIGH | Not Vulnerable | 2026-02-16 14:40:29 | ||
| Alpine Linux 3.22 | python | 3.6 | 7.5 | HIGH | Already Fixed | 2026-01-27 16:43:20 | ||
| Debian 10 | python | 3.6 | 7.5 | HIGH | Already Fixed | 2025-09-05 09:16:38 | ||
| Debian 10 | python | 2.7 | 7.5 | HIGH | Not Vulnerable | 2025-09-05 09:16:37 | ||
| Debian 11 | python | 2.7 | 7.5 | HIGH | Not Vulnerable | 2025-09-05 09:16:37 | ||
| Debian 11 | python | 3.6 | 7.5 | HIGH | Already Fixed | 2025-09-05 09:16:38 | ||
| Debian 12 | python | 3.7 | 7.5 | HIGH | Not Vulnerable | 2025-11-12 16:12:42 | Not vulnerable: the deployed Python versions are 3.7.17 and 3.8.20, whereas CVE‑2018‑14647 only ... | |
| Debian 12 | python | 3.6 | 7.5 | HIGH | Already Fixed | 2025-09-05 09:16:37 | Not vulnerable: the deployed Python versions are 3.7.17 and 3.8.20, whereas CVE‑2018‑14647 only ... | |
| Debian 12 | python | 2.7 | 7.5 | HIGH | Not Vulnerable | 2025-09-05 09:16:36 | Not vulnerable: the deployed Python versions are 3.7.17 and 3.8.20, whereas CVE‑2018‑14647 only ... | |
| Debian 13 | python | 3.6 | 7.5 | HIGH | Already Fixed | 2025-09-24 22:30:04 |