{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-49841 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-49841 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-49841 is a critical memory corruption vulnerability in signalwire freeswitch, published on 9 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-49841 and fix it if it is affected.\n\nWhat it is: CVE-2026-49841 is a critical memory corruption vulnerability in signalwire freeswitch, published on 9 Jun 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 CVE-2026-49841 in the wild and no public exploit code.\n\nAffected product: signalwire freeswitch. 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-2026-49841/ (Markdown: https://insights.sbomify.com/CVE-2026-49841/index.md)","id":"CVE-2026-49841","markdown":"https://insights.sbomify.com/CVE-2026-49841/index.md","name":"CVE-2026-49841","record":{"aliases":["GHSA-wfrq-qvg2-f88f"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"FreeSWITCH telecom stack","requires_auth":"none","summary":"An attacker can trigger a pre-authentication heap buffer overflow in FreeSWITCH's mod_verto module, potentially leading to remote code execution.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"freeswitch","vendor":"freeswitch"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-131","name":"Incorrect Calculation of Buffer Size"},{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.1, the mod_verto HTTP request handler allocates a fixed 2 MiB buffer for a POST application/x-www-form-urlencoded body but accepts Content-Length up to just under 10 MiB. The body-read loop is bounded by Content-Length rather than the buffer size, producing an attacker-controlled heap overflow of up to ~8 MiB -- before the HTTP basic-auth check runs. This issue has been patched in version 1.11.1.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"FreeSWITCH: Pre-authentication heap buffer overflow in `mod_verto` HTTP POST body read","id":"CVE-2026-49841","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"FreeSWITCH: Pre-authentication bandwidth amplification via `mod_verto` speed-test frames","id":"CVE-2026-49842"},"packages":[],"prev":{"headline":"FreeSWITCH: Pre-authentication heap buffer overflow in libesl `Content-Length` parsing","id":"CVE-2026-49840"},"products":["freeswitch"],"published":"2026-06-09","related":[{"cvss_score":9.8,"headline":"Hardcoded credentials in n/a","id":"CVE-2019-19492","kev_date_added":null,"published":"2019-12-02"},{"cvss_score":9.1,"headline":"FreeSWITCH: Pre-authentication heap buffer overflow in libesl `Content-Length` parsing","id":"CVE-2026-49840","kev_date_added":null,"published":"2026-06-09"},{"cvss_score":8.6,"headline":"FreeSWITCH susceptible to Denial of Service via SIP flooding","id":"CVE-2021-41145","kev_date_added":null,"published":"2021-10-25"},{"cvss_score":7.5,"headline":"Freeswitch Denial-of-Service in SIP PUBLISH Requests via XML Entity Expansion","id":"CVE-2026-45771","kev_date_added":null,"published":"2026-06-09"},{"cvss_score":7.5,"headline":"FreeSWITCH: Out-of-bounds memory access in core STUN attribute parsing","id":"CVE-2026-49475","kev_date_added":null,"published":"2026-06-09"},{"cvss_score":7.5,"headline":"FreeSWITCH: Pre-authentication bandwidth amplification via `mod_verto` speed-test frames","id":"CVE-2026-49842","kev_date_added":null,"published":"2026-06-09"}],"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)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-06-11","vendors":["signalwire"]},"summary":"An attacker can trigger a pre-authentication heap buffer overflow in FreeSWITCH's mod_verto module, potentially leading to remote code execution.","url":"https://insights.sbomify.com/CVE-2026-49841/"}