{"answers":{"affected":"3 open source packages ship an affected version, including matrix-synapse.","exploited":"There is no known exploitation of CVE-2024-53867 in the wild and no public exploit code.","fix":"Upgrade matrix-synapse to 1.120.1 or later.","what":"CVE-2024-53867 is a medium-severity vulnerability in element-hq synapse, published on 3 Dec 2024. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2024-53867 and fix it if it is affected.\n\nWhat it is: CVE-2024-53867 is a medium-severity vulnerability in element-hq synapse, published on 3 Dec 2024. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2024-53867 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- matrix-synapse (PyPI): affected from 1.113.0rc1; fixed in 1.120.1\n- matrix-synapse (PyPI): affected from 1.113.0rc1; fixed in 1.120.1\n- matrix-synapse (PyPI): affected from 1.113.0rc1; fixed in 1.120.1\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-2024-53867/ (Markdown: https://insights.sbomify.com/CVE-2024-53867/index.md)","id":"CVE-2024-53867","markdown":"https://insights.sbomify.com/CVE-2024-53867/index.md","name":"CVE-2024-53867","record":{"aliases":["GHSA-56w4-5538-8v8h","PYSEC-2026-1610"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":true,"product_category":"Matrix homeserver","requires_auth":"low_privilege","summary":"Attackers can leak partial room state changes to users no longer in a room via Sliding Sync in Synapse Matrix homeservers.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-497","name":"Exposure of Sensitive System Information to an Unauthorized Control Sphere"}],"description":"Synapse is an open-source Matrix homeserver. The Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. This vulnerability is fixed in 1.120.1.","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":"Synapse Matrix has a partial room state leak via Sliding Sync","id":"CVE-2024-53867","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"information_disclosure","year":"2024"},"n_packages":3,"n_references":2,"next":{"headline":"Apache Traffic Server: Malformed chunked message body allows request smuggling","id":"CVE-2024-53868"},"packages":[{"ecosystem":"PyPI","fixed":["1.120.1"],"introduced":["1.113.0rc1"],"last_affected":[],"package":"matrix-synapse","purl":null,"source":"GHSA-56w4-5538-8v8h"},{"ecosystem":"PyPI","fixed":["1.120.1"],"introduced":["1.113.0rc1"],"last_affected":[],"package":"matrix-synapse","purl":"pkg:pypi/matrix-synapse","source":"GHSA-56w4-5538-8v8h"},{"ecosystem":"PyPI","fixed":["1.120.1"],"introduced":["1.113.0rc1"],"last_affected":[],"package":"matrix-synapse","purl":"pkg:pypi/matrix-synapse","source":"PYSEC-2026-1610"}],"prev":{"headline":"pnpm vulnerable to no-script global cache poisoning via overrides / `ignore-scripts` evasion","id":"CVE-2024-53866"},"products":["synapse"],"published":"2024-12-03","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":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"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":"2024-12-03","vendors":["element-hq"]},"summary":"Attackers can leak partial room state changes to users no longer in a room via Sliding Sync in Synapse Matrix homeservers.","url":"https://insights.sbomify.com/CVE-2024-53867/"}