{"answers":{"affected":"5 open source packages ship an affected version, including wagtail. It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-28837 in the wild and no public exploit code.","fix":"Upgrade wagtail to a fixed version for your release line: 4.1.4 or 4.2.2.","what":"CVE-2023-28837 is a medium-severity denial of service vulnerability in wagtail, published on 3 Apr 2023. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-28837 and fix it if it is affected.\n\nWhat it is: CVE-2023-28837 is a medium-severity denial of service vulnerability in wagtail, published on 3 Apr 2023. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-28837 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- wagtail (PyPI): affected all versions; fixed in 4.1.4\n- wagtail (PyPI): affected all versions; fixed in 4.1.4\n- wagtail (PyPI): affected from 4.2; fixed in 4.2.2, 4.1.4\n- wagtail (PyPI): affected from 4.2; fixed in 4.2.2\n- wagtail (PyPI): affected from 4.2; fixed in 4.2.2\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-2023-28837/ (Markdown: https://insights.sbomify.com/CVE-2023-28837/index.md)","id":"CVE-2023-28837","markdown":"https://insights.sbomify.com/CVE-2023-28837/index.md","name":"CVE-2023-28837","record":{"aliases":["GHSA-33pv-vcgh-jfg9","PYSEC-2023-56"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Wagtail CMS","requires_auth":"high_privilege","summary":"Admin users can cause denial of service by uploading large files that exhaust server memory during processing.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"wagtail","vendor":"torchbox"}],"cvss":{"score":4.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"Wagtail is an open source content management system built on Django. Prior to versions 4.1.4 and 4.2.2, a memory exhaustion bug exists in Wagtail's handling of uploaded images and documents. For both images and documents, files are loaded into memory during upload for additional processing. A user with access to upload images or documents through the Wagtail admin interface could upload a file so large that it results in a crash of denial of service.\n\nThe vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin. It can only be exploited by admin users with permission to upload images or documents.\n\nImage uploads are restricted to 10MB by default, however this validation only happens on the frontend and on the backend after the vulnerable code. \n\nPatched versions have been released as Wagtail 4.1.4 and Wagtail 4.2.2). Site owners who are unable to upgrade to the new versions are encouraged to add extra protections outside of Wagtail to limit the size of uploaded files.","ecosystems":["PyPI"],"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":"Wagtail vulnerable to denial-of-service via memory exhaustion when uploading large files","id":"CVE-2023-28837","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"denial_of_service","year":"2023"},"n_packages":5,"n_references":8,"next":{"headline":"GLPI vulnerable to SQL injection through dynamic reports","id":"CVE-2023-28838"},"packages":[{"ecosystem":"PyPI","fixed":["4.1.4"],"introduced":["0"],"last_affected":[],"package":"wagtail","purl":null,"source":"GHSA-33pv-vcgh-jfg9"},{"ecosystem":"PyPI","fixed":["4.1.4"],"introduced":["0"],"last_affected":[],"package":"wagtail","purl":"pkg:pypi/wagtail","source":"GHSA-33pv-vcgh-jfg9"},{"ecosystem":"PyPI","fixed":["4.2.2","4.1.4"],"introduced":["4.2","0"],"last_affected":[],"package":"wagtail","purl":"pkg:pypi/wagtail","source":"PYSEC-2023-56"},{"ecosystem":"PyPI","fixed":["4.2.2"],"introduced":["4.2"],"last_affected":[],"package":"wagtail","purl":null,"source":"GHSA-33pv-vcgh-jfg9"},{"ecosystem":"PyPI","fixed":["4.2.2"],"introduced":["4.2"],"last_affected":[],"package":"wagtail","purl":"pkg:pypi/wagtail","source":"GHSA-33pv-vcgh-jfg9"}],"prev":{"headline":"Wagtail vulnerable to stored Cross-site Scripting attack via ModelAdmin views","id":"CVE-2023-28836"},"products":["wagtail"],"published":"2023-04-03","related":[{"cvss_score":7.3,"headline":"Wagtail: Reflected XSS in dynamic image URL generator view","id":"CVE-2026-54263","kev_date_added":null,"published":"2026-07-01"},{"cvss_score":6.5,"headline":"Wagtail: Improper permission handling in image preview","id":"CVE-2026-54261","kev_date_added":null,"published":"2026-07-01"},{"cvss_score":6.5,"headline":"Wagtail: Improper permission handling when comparing revisions","id":"CVE-2026-44197","kev_date_added":null,"published":"2026-05-11"},{"cvss_score":6.5,"headline":"Wagtail: Improper permission handling when deleting form submissions","id":"CVE-2026-44199","kev_date_added":null,"published":"2026-05-11"},{"cvss_score":6.5,"headline":"Wagtail: Improper permission handling when copying pages","id":"CVE-2026-44200","kev_date_added":null,"published":"2026-05-11"},{"cvss_score":6.5,"headline":"Wagtail regular expression denial-of-service via search query parsing","id":"CVE-2024-39317","kev_date_added":null,"published":"2024-07-11"},{"cvss_score":6.4,"headline":"Wagtail vulnerable to stored Cross-site Scripting attack via ModelAdmin views","id":"CVE-2023-28836","kev_date_added":null,"published":"2023-04-03"}],"sources":[{"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":"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-02-11","vendors":["wagtail"]},"summary":"Admin users can cause denial of service by uploading large files that exhaust server memory during processing.","url":"https://insights.sbomify.com/CVE-2023-28837/"}