GHSA-qpc8-7fxc-cm4p
LOWGHSA-qpc8-7fxc-cm4p is a low-severity (CVSS 3.1) CWE-524 vulnerability in django. O3 Security confirms whether GHSA-qpc8-7fxc-cm4p is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Django: UpdateCacheMiddleware may disclose private cached responses by omitting Authorization from Vary
Blast Radius
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Description
An issue was discovered in Django 5.2 before 5.2.15 and 6.0 before 6.0.6.
django.middleware.cache.UpdateCacheMiddleware in Django does not add Authorization to the Vary response header for requests bearing that header without Cache-Control: public, which allows remote attackers to read private cached responses via unauthenticated requests to the same URL.
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 Shai Berger for reporting this issue.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | django | ≥ 5.2.0&&< 5.2.15 | 5.2.15 |
| 🐍PyPI | django | ≥ 6.0.0&&< 6.0.6 | 6.0.6 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for django. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update django to 5.2.15 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-qpc8-7fxc-cm4p is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-qpc8-7fxc-cm4p is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-qpc8-7fxc-cm4p. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-qpc8-7fxc-cm4p in your dependencies?
O3 detects GHSA-qpc8-7fxc-cm4p across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.