{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2026-54887 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-54887 is a medium-severity vulnerability in Erlang OTP, published on 2 Jul 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-2026-54887 and fix it if it is affected.\n\nWhat it is: CVE-2026-54887 is a medium-severity vulnerability in Erlang OTP, published on 2 Jul 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-2026-54887 in the wild and no public exploit code.\n\nAffected product: Erlang OTP. 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-2026-54887/ (Markdown: https://insights.sbomify.com/CVE-2026-54887/index.md)","id":"CVE-2026-54887","markdown":"https://insights.sbomify.com/CVE-2026-54887/index.md","name":"CVE-2026-54887","record":{"aliases":["AZL-95660","DEBIAN-CVE-2026-54887","EEF-CVE-2026-54887","GHSA-p2m2-3c2w-8jp8","UBUNTU-CVE-2026-54887"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Erlang OTP SSL","requires_auth":"none","summary":"Attackers can bypass DTLS source address verification during server startup, enabling amplification attacks and denial of service.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"EEF","cpe":[{"product":"erlang\\/otp","vendor":"erlang"},{"product":"erlang\\/ssl","vendor":"erlang"}],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-1394","name":"Use of Default Cryptographic Key"}],"description":"Use of Default Cryptographic Key vulnerability in Erlang/OTP ssl (DTLS server) allows predictable DTLS cookie computation during the startup window, enabling source address verification bypass.\n\nOn DTLS server startup, dtls_server_connection:initial_hello/3 initializes previous_cookie_secret to the empty binary (\u003c\u003c\u003e\u003e) instead of a random value. Because HMAC with an empty key is deterministic, anyone who observes the plaintext ClientHello can compute dtls_handshake:cookie(\u003c\u003c\u003e\u003e, IP, Port, Hello) and forge a valid DTLS cookie before the first rotation of the cookie secret. The DTLS cookie (RFC 6347 §4.2.1) is a denial-of-service mitigation that prevents spoofed source IPs from forcing the server to allocate state and perform expensive cryptographic operations; it is not an authentication mechanism. During the window from server startup until the first secret rotation (0 to 15 seconds), an attacker who can observe the plaintext ClientHello can bypass the source address verification, enabling DTLS handshake amplification with spoofed source addresses.\n\nThis vulnerability is associated with program file lib/ssl/src/dtls_server_connection.erl and program routine dtls_server_connection:initial_hello/3.\n\nThis issue affects OTP from OTP 20.0 before OTP 29.0.3, OTP 28.5.0.3 and OTP 27.3.4.14, corresponding to ssl from 8.2 before 11.7.3, 11.6.0.3 and 11.2.12.10.","ecosystems":[],"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":"DTLS server cookie bypass during startup window due to empty initial cookie secret","id":"CVE-2026-54887","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"security_feature_bypass","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"Uncontrolled recursion over deeply nested Markdown crashes the BEAM in mdex","id":"CVE-2026-54888"},"packages":[],"prev":{"headline":"SSH SFTP server denial of service via extended channel data infinite loop","id":"CVE-2026-54886"},"products":["OTP"],"published":"2026-07-02","related":[{"cvss_score":9.8,"headline":"Auth bypass in n/a","id":"CVE-2022-37026","kev_date_added":null,"published":"2022-09-21"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2016-10253","kev_date_added":null,"published":"2017-03-18"},{"cvss_score":9.1,"headline":"TLS 1.2 and DTLS client accepts unoffered anonymous cipher suite, bypassing server authentication","id":"CVE-2026-55953","kev_date_added":null,"published":"2026-07-27"},{"cvss_score":8.8,"headline":"Stack buffer overflow in SCTP error cause parsing in inet_drv allows remote VM crash","id":"CVE-2026-49759","kev_date_added":null,"published":"2026-06-10"},{"cvss_score":8.7,"headline":"TLS/DTLS denial of service via unbounded recursion on cross-signed peer certificate chain","id":"CVE-2026-58227","kev_date_added":null,"published":"2026-07-27"},{"cvss_score":8.7,"headline":"Denial of service via exponential certificate policy tree growth in path validation","id":"CVE-2026-59251","kev_date_added":null,"published":"2026-07-27"},{"cvss_score":8.7,"headline":"DTLS listener crash via race condition in dtls_packet_demux causes denial of service for all sessions","id":"CVE-2026-55950","kev_date_added":null,"published":"2026-07-02"}],"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-24","vendors":["Erlang"]},"summary":"Attackers can bypass DTLS source address verification during server startup, enabling amplification attacks and denial of service.","url":"https://insights.sbomify.com/CVE-2026-54887/"}