{"answers":{"affected":"2 open source packages ship an affected version, including @deepstream/server.","exploited":"There is no known exploitation of CVE-2026-49252 in the wild and no public exploit code.","fix":"Upgrade @deepstream/server to 10.0.5 or later.","what":"CVE-2026-49252 is a critical vulnerability in deepstreamIO deepstream.io, published on 18 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-49252 and fix it if it is affected.\n\nWhat it is: CVE-2026-49252 is a critical vulnerability in deepstreamIO deepstream.io, published on 18 Jun 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-2026-49252 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- @deepstream/server (npm): affected all versions; fixed in 10.0.5\n- @deepstream/server (npm): affected all versions; fixed in 10.0.5\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/CVE-2026-49252/ (Markdown: https://insights.sbomify.com/CVE-2026-49252/index.md)","id":"CVE-2026-49252","markdown":"https://insights.sbomify.com/CVE-2026-49252/index.md","name":"CVE-2026-49252","record":{"aliases":["GHSA-9v98-6g37-x9g6"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"deepstream.io server","requires_auth":"low_privilege","summary":"An authenticated user with write permissions can exploit prototype pollution to escalate privileges within the deepstream.io server.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":9.9,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L","version":"3.1"},"cwes":[{"id":"CWE-1321","name":"Improperly Controlled Modification of Object Prototype Attributes"}],"description":"deepstream is a server that allows clients and backend services to sync data, send messages and make rpcs at scale. Versions prior to 10.0.5  are vulnerable to Prototype Pollution. Exploitation can lead to potential privilege escalation from any authenticated user with write permission to any record. This issue has been fixed in version 10.0.5.","ecosystems":["npm"],"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":"deepstream is vulnerable to prototype pollution","id":"CVE-2026-49252","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"other","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"electerm: Path Traversal in Zmodem and Trzsz Download Filename Handling","id":"CVE-2026-49253"},"packages":[{"ecosystem":"npm","fixed":["10.0.5"],"introduced":["0"],"last_affected":[],"package":"@deepstream/server","purl":null,"source":"GHSA-9v98-6g37-x9g6"},{"ecosystem":"npm","fixed":["10.0.5"],"introduced":["0"],"last_affected":[],"package":"@deepstream/server","purl":"pkg:npm/%40deepstream/server","source":"GHSA-9v98-6g37-x9g6"}],"prev":{"headline":"Conform: parseSubmission vulnerable to CPU exhaustion when parsing many unique form fields","id":"CVE-2026-49250"},"products":["deepstream.io"],"published":"2026-06-18","related":[],"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":"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":"2026-06-22","vendors":["deepstreamIO"]},"summary":"An authenticated user with write permissions can exploit prototype pollution to escalate privileges within the deepstream.io server.","url":"https://insights.sbomify.com/CVE-2026-49252/"}