{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2026-54890 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-54890 is a high-severity vulnerability in Erlang OTP, published on 27 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-2026-54890 and fix it if it is affected.\n\nWhat it is: CVE-2026-54890 is a high-severity vulnerability in Erlang OTP, published on 27 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-2026-54890 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-2026-54890/ (Markdown: https://insights.sbomify.com/CVE-2026-54890/index.md)","id":"CVE-2026-54890","markdown":"https://insights.sbomify.com/CVE-2026-54890/index.md","name":"CVE-2026-54890","record":{"aliases":["DEBIAN-CVE-2026-54890","EEF-CVE-2026-54890","GHSA-54pw-5645-jh86","UBUNTU-CVE-2026-54890"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Erlang OTP runtime","requires_auth":"none","summary":"Attackers can crash the Erlang VM by sending crafted binary data, causing a denial of service in applications decoding untrusted terms.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"EEF","cpe":[{"product":"erlang\\/otp","vendor":"erlang"},{"product":"erts","vendor":"erlang"}],"cvss":{"score":8.2,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-789","name":"Memory Allocation with Excessive Size Value"},{"id":"CWE-191","name":"Integer Underflow (Wrap or Wraparound)"},{"id":"CWE-1284","name":"Improper Validation of Specified Quantity in Input"}],"description":"Integer Underflow (Wrap or Wraparound) vulnerability in erlang otp erlang/otp (erts modules), erlang otp erts (erts modules) allows Forced Integer Overflow, Excessive Allocation. This vulnerability is associated with program files erts/emulator/beam/external.c, emulator/beam/external.c.\n\nThe BIT_BINARY_EXT tag (77) handler in the External Term Format (ETF) decoder accepts an encoding with both length and trailing-bits fields set to zero. The subsequent computation of the bitstring size underflows an unsigned integer, producing a value of roughly 2^64 that is then passed as a memory allocation size. The allocator aborts the entire node with a message such as \"Cannot allocate 2305843009213693951 bytes of memory (of type binary)\".\n\nThe crash is a VM-level abort, not an Erlang-level exception. It cannot be intercepted by supervision trees, by try/catch, or by passing the [safe] option to binary_to_term/2 (which only restricts atom creation and does not perform structural validation of binary encodings).\n\nAny application that decodes ETF from untrusted sources via binary_to_term/1,2 or enif_binary_to_term() is exposed. The Erlang distribution protocol also decodes incoming terms through the same code path, but distribution is expected to run on trusted networks per the OTP Secure Coding Guidelines (DSG-011).\n\nThis issue affects OTP from OTP 27.0 before OTP 29.0.4, OTP 28.5.0.4 and OTP 27.3.4.15, corresponding to erts from 15.0 before 17.0.4, 16.4.0.4 and 15.2.7.11.","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":"BEAM VM crash via integer underflow in binary_to_term BIT_BINARY_EXT decoding","id":"CVE-2026-54890","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"Plaintext APPLICATION_DATA injected during TLS handshake delivered to client application post-handshake in ssl","id":"CVE-2026-54891"},"packages":[],"prev":{"headline":"Unsanitized URL schemes in MDEx Quill Delta output allow javascript: injection (XSS)","id":"CVE-2026-54889"},"products":["OTP"],"published":"2026-07-27","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":"2026-07-28","vendors":["Erlang"]},"summary":"Attackers can crash the Erlang VM by sending crafted binary data, causing a denial of service in applications decoding untrusted terms.","url":"https://insights.sbomify.com/CVE-2026-54890/"}