{"answers":{"affected":"4 open source packages ship an affected version, including next.","exploited":"There is no known exploitation of GHSA-8h8q-6873-q5fj in the wild and no public exploit code.","fix":"Upgrade next to a fixed version for your release line: 15.5.16 or 16.2.5.","what":"GHSA-8h8q-6873-q5fj is a denial of service vulnerability in next, published on 11 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for GHSA-8h8q-6873-q5fj and fix it if it is affected.\n\nWhat it is: GHSA-8h8q-6873-q5fj is a denial of service vulnerability in next, published on 11 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of GHSA-8h8q-6873-q5fj in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- next (npm): affected from 13.0.0; fixed in 15.5.16\n- next (npm): affected from 13.0.0; fixed in 15.5.16\n- next (npm): affected from 16.0.0; fixed in 16.2.5\n- next (npm): affected from 16.0.0; fixed in 16.2.5\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/GHSA-8h8q-6873-q5fj/ (Markdown: https://insights.sbomify.com/GHSA-8h8q-6873-q5fj/index.md)","id":"GHSA-8h8q-6873-q5fj","markdown":"https://insights.sbomify.com/GHSA-8h8q-6873-q5fj/index.md","name":"GHSA-8h8q-6873-q5fj","record":{"aliases":[],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Next.js framework","requires_auth":"none","summary":"Attackers can cause denial of service via excessive CPU usage by sending crafted requests to Next.js App Router Server Function endpoints.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"A vulnerability affects certain React Server Components packages for versions 19.x and frameworks that use the affected packages, including Next.js 13.x, 14.x, 15.x, and 16.x using the App Router. The issue is tracked upstream as [CVE-2026-23870](https://github.com/facebook/react/security/advisories/GHSA-rv78-f8rc-xrxh). \n\nA specially crafted HTTP request can be sent to any App Router Server Function endpoint that, when deserialized, may trigger excessive CPU usage. This can result in denial of service in unpatched environments.","ecosystems":["npm"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":true,"headline":"Next.js Vulnerable to Denial of Service with Server Components","id":"GHSA-8h8q-6873-q5fj","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":4,"n_references":null,"packages":[{"ecosystem":"npm","fixed":["15.5.16"],"introduced":["13.0.0"],"last_affected":[],"package":"next","purl":null,"source":"GHSA-8h8q-6873-q5fj"},{"ecosystem":"npm","fixed":["15.5.16"],"introduced":["13.0.0"],"last_affected":[],"package":"next","purl":"pkg:npm/next","source":"GHSA-8h8q-6873-q5fj"},{"ecosystem":"npm","fixed":["16.2.5"],"introduced":["16.0.0"],"last_affected":[],"package":"next","purl":null,"source":"GHSA-8h8q-6873-q5fj"},{"ecosystem":"npm","fixed":["16.2.5"],"introduced":["16.0.0"],"last_affected":[],"package":"next","purl":"pkg:npm/next","source":"GHSA-8h8q-6873-q5fj"}],"products":null,"published":"2026-05-11","related":[],"sources":[{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":"Attackers can cause denial of service via excessive CPU usage by sending crafted requests to Next.js App Router Server Function endpoints.","url":"https://insights.sbomify.com/GHSA-8h8q-6873-q5fj/"}