python-django: An issue was discovered in Django 5.2 before 5.2.15 and 6.0 before 6.0.6
CVE-2026-48587 is fixed in 2 products on 1 platform, first by SUSE-SU-2026:2318-1, released June 9, 2026. It is not reported as exploited. Patch Radar priority: Routine.
An issue was discovered in Django 5.2 before 5.2.15 and 6.0 before 6.0.6. `django.utils.cache.has_vary_header()` in Django does not strip leading or trailing whitespace from `Vary` response header values before comparison, which allows remote attackers to read cached responses via requests to URLs whose responses contain whitespace-padded Vary header values. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Navid Rezazadeh for reporting this issue.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| python-Django · opensuse-leap 16.0 | 5.2.4-bp160.9.1 | OPENSUSE-SU-2026:20937-1 | Jun 10, 2026 |
| python-Django · sles 15.7 | 4.2.11-150600.3.59.1 | SUSE-SU-2026:2318-1 | Jun 9, 2026 |
| python-django · Debian 12.15 (bookworm) | 3:3.2.25-0+deb12u5 | DEBIAN-CVE-2026-48587 | Jun 25, 2026 |
| python-django · Debian 14 | 3:5.2.15-1 | DEBIAN-CVE-2026-48587 | Jun 25, 2026 |
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