{"answers":{"affected":"6 open source packages ship an affected version, including django and Django. It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-27556 in the wild and no public exploit code.","fix":"Upgrade django to a fixed version for your release line: 5.0.14 or 5.1.8.","what":"CVE-2025-27556 is a medium-severity denial of service vulnerability in Djangoproject Django, published on 2 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-27556 and fix it if it is affected.\n\nWhat it is: CVE-2025-27556 is a medium-severity denial of service vulnerability in Djangoproject Django, published on 2 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-27556 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- django (Bitnami): affected from 5.0.0; fixed in 5.0.14, 5.1.8\n- django (PyPI): affected from 5.0; fixed in 5.0.14\n- django (PyPI): affected from 5.1; fixed in 5.1.8, 5.0.14\n- django (PyPI): affected from 5.1; fixed in 5.1.8\n- Django (PyPI): affected from 5.0; fixed in 5.0.14\n- Django (PyPI): affected from 5.1; fixed in 5.1.8\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-27556/ (Markdown: https://insights.sbomify.com/CVE-2025-27556/index.md)","id":"CVE-2025-27556","markdown":"https://insights.sbomify.com/CVE-2025-27556/index.md","name":"CVE-2025-27556","record":{"aliases":["BIT-django-2025-27556","GHSA-wqfg-m96j-85vm","PYSEC-2025-14","openSUSE-SU-2025:14986-1"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Django web framework","requires_auth":"none","summary":"Attackers can cause denial of service in Django applications on Windows by sending inputs with many Unicode characters, exploiting slow NFKC normalization.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"django","vendor":"djangoproject"}],"cvss":{"score":5.8,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"An issue was discovered in Django 5.1 before 5.1.8 and 5.0 before 5.0.14. The NFKC normalization is slow on Windows. As a consequence, django.contrib.auth.views.LoginView, django.contrib.auth.views.LogoutView, and django.views.i18n.set_language are subject to a potential denial-of-service attack via certain inputs with a very large number of Unicode characters.","ecosystems":["Bitnami","PyPI","openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Django Potential Denial of Service (DoS) on Windows","id":"CVE-2025-27556","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"djangoproject:django","products":["djangoproject:django"],"type":"denial_of_service","year":"2025"},"n_packages":7,"n_references":3,"next":{"headline":"Other in n/a","id":"CVE-2025-27558"},"packages":[{"ecosystem":"Bitnami","fixed":["5.0.14","5.1.8"],"introduced":["5.0.0","5.1.0"],"last_affected":[],"package":"django","purl":"pkg:bitnami/django","source":"BIT-django-2025-27556"},{"ecosystem":"PyPI","fixed":["5.0.14"],"introduced":["5.0"],"last_affected":[],"package":"Django","purl":null,"source":"GHSA-wqfg-m96j-85vm"},{"ecosystem":"PyPI","fixed":["5.1.8"],"introduced":["5.1"],"last_affected":[],"package":"Django","purl":null,"source":"GHSA-wqfg-m96j-85vm"},{"ecosystem":"PyPI","fixed":["5.0.14"],"introduced":["5.0"],"last_affected":[],"package":"django","purl":"pkg:pypi/django","source":"GHSA-wqfg-m96j-85vm"},{"ecosystem":"PyPI","fixed":["5.1.8","5.0.14"],"introduced":["5.1","5.0"],"last_affected":[],"package":"django","purl":"pkg:pypi/django","source":"PYSEC-2025-14"},{"ecosystem":"PyPI","fixed":["5.1.8"],"introduced":["5.1"],"last_affected":[],"package":"django","purl":"pkg:pypi/django","source":"GHSA-wqfg-m96j-85vm"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["5.1.8-1.1"],"introduced":["0"],"last_affected":[],"package":"python-Django","purl":"pkg:rpm/opensuse/python-Django\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2025:14986-1"}],"prev":{"headline":"Apache Airflow: Connection Secrets not masked in UI when Connection are added via Airflow cli","id":"CVE-2025-27555"},"products":["Django"],"published":"2025-04-02","related":[{"cvss_score":9.8,"headline":"Privilege abuse in GenericInlineModelAdmin","id":"CVE-2026-4277","kev_date_added":null,"published":"2026-04-07"},{"cvss_score":9.8,"headline":"Django SQL injection in HasKey(lhs, rhs) on Oracle","id":"CVE-2024-53908","kev_date_added":null,"published":"2024-12-06"},{"cvss_score":9.8,"headline":"Django SQL injection vulnerability","id":"CVE-2024-42005","kev_date_added":null,"published":"2024-08-07"},{"cvss_score":9.8,"headline":"Django bypasses validation when using one form field to upload multiple files","id":"CVE-2023-31047","kev_date_added":null,"published":"2023-05-07"},{"cvss_score":9.8,"headline":"Django `Trunc()` and `Extract()` database functions vulnerable to SQL Injection","id":"CVE-2022-34265","kev_date_added":null,"published":"2022-07-04"},{"cvss_score":9.8,"headline":"SQL Injection in Django","id":"CVE-2021-35042","kev_date_added":null,"published":"2021-07-02"},{"cvss_score":9.8,"headline":"SQL injection in Django","id":"CVE-2020-7471","kev_date_added":null,"published":"2020-02-03"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-04-02","vendors":["djangoproject"]},"summary":"Attackers can cause denial of service in Django applications on Windows by sending inputs with many Unicode characters, exploiting slow NFKC normalization.","url":"https://insights.sbomify.com/CVE-2025-27556/"}