{"answers":{"affected":"It affects 4 products.","exploited":"There is no known exploitation of CVE-2025-54939 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2025-54939 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-54939 is a medium-severity denial of service vulnerability in litespeedtech LSQUIC, published on 1 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-54939 and fix it if it is affected.\n\nWhat it is: CVE-2025-54939 is a medium-severity denial of service vulnerability in litespeedtech LSQUIC, published on 1 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-54939 in the wild and no public exploit code.\n\nAffected product: litespeedtech LSQUIC. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2025-54939/ (Markdown: https://insights.sbomify.com/CVE-2025-54939/index.md)","id":"CVE-2025-54939","markdown":"https://insights.sbomify.com/CVE-2025-54939/index.md","name":"CVE-2025-54939","record":{"aliases":["GHSA-839r-7hhg-xhqr"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"QUIC library","requires_auth":"none","summary":"A memory leak in the LSQUIC library allows attackers to cause a denial of service by exhausting system memory.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"litespeed_web_adc","vendor":"litespeedtech"},{"product":"litespeed_web_server","vendor":"litespeedtech"},{"product":"lsquic","vendor":"litespeedtech"},{"product":"openlitespeed","vendor":"litespeedtech"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-401","name":"Missing Release of Memory after Effective Lifetime"},{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"LiteSpeed QUIC (LSQUIC) Library before 4.3.1 has an lsquic_engine_packet_in memory leak.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2025-08-27","github_poc":1,"max_poc_stars":1,"metasploit":0,"nuclei":0,"refs":[{"date":"2025-08-27T06:02:23Z","kind":"github_poc","ref":"https://github.com/yohannslm/CVE-2025-54939","stars":1,"title":"POC for CVE-2025-54939. ~ forcibly loads 200MiB/s in server's memory"}],"tier":"poc_unverified"},"has_fix":false,"headline":"Denial of service in LSQUIC","id":"CVE-2025-54939","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2025"},"n_packages":0,"n_references":4,"next":{"headline":"Cross-site scripting in Advanced Custom Fields","id":"CVE-2025-54940"},"packages":[],"prev":{"headline":"Path traversal in EcoStruxure™ Power Monitoring Expert (PME)","id":"CVE-2025-54927"},"products":["LSQUIC"],"published":"2025-08-01","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-08-20","vendors":["litespeedtech"]},"summary":"A memory leak in the LSQUIC library allows attackers to cause a denial of service by exhausting system memory.","url":"https://insights.sbomify.com/CVE-2025-54939/"}