{"answers":{"affected":"6 open source packages ship an affected version, including activestorage. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-33658 in the wild and no public exploit code.","fix":"Upgrade activestorage to a fixed version for your release line: 7.2.3.1, 8.0.4.1 or 8.1.2.1.","what":"CVE-2026-33658 is a low-severity denial of service vulnerability in Rubyonrails Rails, published on 26 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-33658 and fix it if it is affected.\n\nWhat it is: CVE-2026-33658 is a low-severity denial of service vulnerability in Rubyonrails Rails, published on 26 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-33658 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- activestorage (RubyGems): affected all versions; fixed in 7.2.3.1\n- activestorage (RubyGems): affected all versions; fixed in 7.2.3.1\n- activestorage (RubyGems): affected from 8.0.0; fixed in 8.0.4.1\n- activestorage (RubyGems): affected from 8.0.0; fixed in 8.0.4.1\n- activestorage (RubyGems): affected from 8.1.0; fixed in 8.1.2.1\n- activestorage (RubyGems): affected from 8.1.0; fixed in 8.1.2.1\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-2026-33658/ (Markdown: https://insights.sbomify.com/CVE-2026-33658/index.md)","id":"CVE-2026-33658","markdown":"https://insights.sbomify.com/CVE-2026-33658/index.md","name":"CVE-2026-33658","record":{"aliases":["DEBIAN-CVE-2026-33658","GHSA-p9fm-f462-ggrg","UBUNTU-CVE-2026-33658"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Rails Active Storage","requires_auth":"low_privilege","summary":"Attackers can cause denial of service in Rails Active Storage proxy mode by sending HTTP requests with excessive byte ranges, consuming disproportionate CPU resources.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"rails","vendor":"rubyonrails"}],"cvss":{"score":2.3,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1\nActive Storage's proxy controller does not limit the number of byte ranges in an HTTP Range header. A request with thousands of small ranges causes disproportionate CPU usage compared to a normal request for the same file, possibly resulting in a DoS vulnerability. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.","ecosystems":["RubyGems"],"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":"Rails Active Storage has a possible DoS vulnerability in proxy mode via multi-range requests","id":"CVE-2026-33658","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"RubyGems","product":"rubyonrails:rails","products":["rubyonrails:rails"],"type":"denial_of_service","year":"2026"},"n_packages":6,"n_references":5,"next":{"headline":"EspoCRM: SSRF via DNS Rebinding in Attachment fromImageUrl Endpoint Allows Internal Network Access","id":"CVE-2026-33659"},"packages":[{"ecosystem":"RubyGems","fixed":["7.2.3.1"],"introduced":["0"],"last_affected":[],"package":"activestorage","purl":null,"source":"GHSA-p9fm-f462-ggrg"},{"ecosystem":"RubyGems","fixed":["7.2.3.1"],"introduced":["0"],"last_affected":[],"package":"activestorage","purl":"pkg:gem/activestorage","source":"GHSA-p9fm-f462-ggrg"},{"ecosystem":"RubyGems","fixed":["8.0.4.1"],"introduced":["8.0.0"],"last_affected":[],"package":"activestorage","purl":null,"source":"GHSA-p9fm-f462-ggrg"},{"ecosystem":"RubyGems","fixed":["8.0.4.1"],"introduced":["8.0.0"],"last_affected":[],"package":"activestorage","purl":"pkg:gem/activestorage","source":"GHSA-p9fm-f462-ggrg"},{"ecosystem":"RubyGems","fixed":["8.1.2.1"],"introduced":["8.1.0"],"last_affected":[],"package":"activestorage","purl":null,"source":"GHSA-p9fm-f462-ggrg"},{"ecosystem":"RubyGems","fixed":["8.1.2.1"],"introduced":["8.1.0"],"last_affected":[],"package":"activestorage","purl":"pkg:gem/activestorage","source":"GHSA-p9fm-f462-ggrg"}],"prev":{"headline":"EspoCRM: Stored HTML injection in email notifications about stream notes via unescaped post field","id":"CVE-2026-33657"},"products":["activestorage"],"published":"2026-03-26","related":[{"cvss_score":10,"headline":"Active Record contains deserialization of arbitrary YAML","id":"CVE-2013-0277","kev_date_added":null,"published":"2013-02-13"},{"cvss_score":8.1,"headline":"SQL injection in n/a","id":"CVE-2017-17916","kev_date_added":null,"published":"2017-12-29"},{"cvss_score":8.1,"headline":"SQL injection in n/a","id":"CVE-2017-17917","kev_date_added":null,"published":"2017-12-29"},{"cvss_score":8,"headline":"Rails Active Storage has possible Path Traversal in DiskService","id":"CVE-2026-33195","kev_date_added":null,"published":"2026-03-23"},{"cvss_score":7.5,"headline":"Rails possible ReDoS vulnerability in Accept header parsing in Action Dispatch","id":"CVE-2024-26142","kev_date_added":null,"published":"2024-02-27"},{"cvss_score":7.5,"headline":"ReDoS based DoS vulnerability in Action Dispatch","id":"CVE-2023-22792","kev_date_added":null,"published":"2023-02-09"},{"cvss_score":7.5,"headline":"Denial of Service in Action Dispatch","id":"CVE-2021-22902","kev_date_added":null,"published":"2021-06-11"}],"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":"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":"2026-03-30","vendors":["rails"]},"summary":"Attackers can cause denial of service in Rails Active Storage proxy mode by sending HTTP requests with excessive byte ranges, consuming disproportionate CPU resources.","url":"https://insights.sbomify.com/CVE-2026-33658/"}