In Django 3.2 before 3.2.21, 4.1 before 4.1.11, and 4.2 before 4.2.5, django.utils.encoding.uri_to_iri() is subject to a potential DoS (denial of service) attack via certain inputs with a very large number of Unicode characters.
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This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 39% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
In Django 3.2 before 3.2.21, 4.1 before 4.1.11, and 4.2 before 4.2.5, django.utils.encoding.uri_to_iri() is subject to a potential DoS (denial of service) attack via certain inputs with a very large number of Unicode characters.
November 3, 2023
November 4, 2025
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | python3-django (3:3.2.18-1ubuntu0.4) @ lunar | 2026-05-24 | ubuntu |
| ubuntu | python3-django (1:1.11.11-1ubuntu1.21+esm2) @ bionic | 2026-05-24 | ubuntu |
| redhat | python-django-0:4.2.9-1.el8pc | 2024-04-23 | redhat |
| redhat | python-django-0:4.2.11-1.el8ui | 2024-04-18 | redhat |
| redhat | automation-controller-0:4.4.6-1.el9ap | 2023-10-16 | redhat |
| redhat | automation-controller-0:4.3.16-1.el9ap | 2023-10-16 | redhat |
| redhat | python-django-0:3.2.21-1.el9ap | 2023-09-18 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| django | 3.2 ... 4.2.4 (37 versions) | 4.2.5 | — |
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
RHSA-2023:5208 — Moderate
RHSA-2023:5701 — Moderate
RHSA-2023:5758 — Moderate
RHSA-2024:1878 — Moderate
RHSA-2024:2010 — Moderate
Django vulnerability
Django vulnerabilities
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redhat
CWE-1284