CVSS 3.0
5.3 mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LCVE-2018-7537
Medium (5.3). EPSS 4.4% chance of exploitation in the next 30 days. Fixed in django 1.11.11, 1.8.19, 2.0.3.
An issue was discovered in Django 2.0 before 2.0.3, 1.11 before 1.11.11, and 1.8 before 1.8.19. If django.utils.text.Truncator's chars() and words() methods were passed the html=True argument, they were extremely slow to evaluate certain inputs due to a catastrophic backtracking vulnerability in a regular expression. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which were thus vulnerable.
Severity
- EPSS
- 4.4% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-31)
- CWE
- CWE-185
- Published
- Modified
- Record from
- the NVD, synced
Affected
- canonical:ubuntu_linux
- debian:debian_linux
- djangoproject:django
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-2f9x-5v75-3qv4 | PyPI | django | >=2.0 <2.0.3 | 2.0.3 |
| GHSA-2f9x-5v75-3qv4 | PyPI | django | >=1.11 <1.11.11 | 1.11.11 |
| GHSA-2f9x-5v75-3qv4 | PyPI | django | >=1.8 <1.8.19 | 1.8.19 |
| PYSEC-2018-6 | PyPI | django | >=1.8 <1.8.19 >=1.11 <1.11.11 >=2.0 <2.0.3 | 1.8.19, 1.11.11, 2.0.3 |