{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-08-02T00:28:08.590","vulnerabilities":[{"cve":{"id":"CVE-2026-23943","sourceIdentifier":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","published":"2026-03-13T19:54:15.783","lastModified":"2026-07-24T15:17:14.537","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Improper Handling of Highly Compressed Data (Compression Bomb) vulnerability in Erlang OTP ssh (ssh_transport modules) allows Denial of Service via Resource Depletion.\n\nThe SSH transport layer advertises legacy zlib compression by default and inflates attacker-controlled payloads pre-authentication without any size limit, enabling reliable memory exhaustion DoS.\n\nTwo compression algorithms are affected:\n\n* zlib: Activates immediately after key exchange, enabling unauthenticated attacks\n* zlib@openssh.com: Activates post-authentication, enabling authenticated attacks\n\nEach SSH packet can decompress ~255 MB from 256 KB of wire data (1029:1 amplification ratio). Multiple packets can rapidly exhaust available memory, causing OOM kills in memory-constrained environments.\n\nThis vulnerability is associated with program files lib/ssh/src/ssh_transport.erl and program routines ssh_transport:decompress/2, ssh_transport:handle_packet_part/4.\n\nThis issue affects OTP from OTP 17.0 before OTP 28.4.1, OTP 27.3.4.9 and OTP 26.2.5.18, corresponding to ssh from 3.0.1 before 5.5.1, 5.2.11.6 and 5.1.4.14."},{"lang":"es","value":"La vulnerabilidad de Manejo Inadecuado de Datos Altamente Comprimidos (Bomba de Compresión) en Erlang OTP ssh (módulos ssh_transport) permite la denegación de servicio mediante el agotamiento de recursos.\n\nLa capa de transporte SSH anuncia la compresión zlib heredada por defecto e infla cargas útiles controladas por el atacante pre-autenticación sin ningún límite de tamaño, lo que permite una DoS fiable por agotamiento de memoria.\n\nDos algoritmos de compresión se ven afectados:\n\n* zlib: Se activa inmediatamente después del intercambio de claves, lo que permite ataques no autenticados\n* zlib@openssh.com: Se activa post-autenticación, lo que permite ataques autenticados\n\nCada paquete SSH puede descomprimir ~255 MB de 256 KB de datos en la red (relación de amplificación de 1029:1). Múltiples paquetes pueden agotar rápidamente la memoria disponible, causando eliminaciones por OOM en entornos con memoria limitada.\n\nEsta vulnerabilidad está asociada con los archivos de programa lib/ssh/src/ssh_transport.erl y las rutinas de programa ssh_transport:decompress/2, ssh_transport:handle_packet_part/4.\n\nEste problema afecta a OTP desde OTP 17.0 hasta OTP 28.4.1, 27.3.4.9 y 26.2.5.18, lo que corresponde a ssh desde 3.0.1 hasta 5.5.1, 5.2.11.6 y 5.1.4.14."}],"affected":[{"source":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","affectedData":[{"vendor":"Erlang","product":"OTP","defaultStatus":"unknown","packageName":"ssh","cpes":["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"],"modules":["ssh_transport"],"programFiles":["src/ssh_transport.erl"],"programRoutines":[{"name":"ssh_transport:decompress/2"},{"name":"ssh_transport:handle_packet_part/4"}],"repo":"https://github.com/erlang/otp","packageURL":"pkg:otp/ssh?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.git","versions":[{"version":"3.0.1","lessThan":"*","versionType":"otp","status":"affected","changes":[{"at":"5.5.1","status":"unaffected"},{"at":"5.2.11.6","status":"unaffected"},{"at":"5.1.4.14","status":"unaffected"}]}]},{"vendor":"Erlang","product":"OTP","defaultStatus":"unknown","collectionURL":"https://github.com","packageName":"erlang/otp","cpes":["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"],"modules":["ssh_transport"],"programFiles":["lib/ssh/src/ssh_transport.erl"],"programRoutines":[{"name":"ssh_transport:decompress/2"},{"name":"ssh_transport:handle_packet_part/4"}],"repo":"https://github.com/erlang/otp","packageURL":"pkg:github/erlang/otp","versions":[{"version":"17.0","lessThan":"*","versionType":"otp","status":"affected","changes":[{"at":"28.4.1","status":"unaffected"},{"at":"27.3.4.9","status":"unaffected"},{"at":"26.2.5.18","status":"unaffected"}]},{"version":"07b8f441ca711f9812fad9e9115bab3c3aa92f79","lessThan":"*","versionType":"git","status":"affected","changes":[{"at":"43a87b949bdff12d629a8c34146711d9da93b1b1","status":"unaffected"},{"at":"93073c3bd338c60cd2bae715ce6a1d4ffc1a8fd3","status":"unaffected"},{"at":"0c1c04b191f6ab940e8fcfabce39eb5a8a6440a4","status":"unaffected"}]}]}]}],"metrics":{"cvssMetricV40":[{"source":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":6.9,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":3.9,"impactScore":1.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-03-13T16:01:40.898658Z","id":"CVE-2026-23943","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA 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