CVE-2026-27981

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{"affected": [{"affectedData": [{"product": "homebox", "vendor": "sysadminsmedia", "versions": [{"status": "affected", "version": "< 0.24.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:sysadminsmedia:homebox:*:*:*:*:*:*:*:*", "matchCriteriaId": "879C18E6-91D3-4BF1-AEDC-49E1A0D6354D", "versionEndExcluding": "0.24.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "HomeBox is a home inventory and organization system. Prior to 0.24.0, the authentication rate limiter (authRateLimiter) tracks failed attempts per client IP. It determines the client IP by reading, 1. X-Real-IP header, 2. First entry of X-Forwarded-For header, and 3. r.RemoteAddr (TCP connection address). These headers were read unconditionally. An attacker connecting directly to Homebox could forge any value in X-Real-IP, effectively getting a fresh rate limit identity per request. There is a TrustProxy option in the configuration (Options.TrustProxy, default false), but this option was never read by any middleware or rate limiter code. Additionally, chi's middleware.RealIP was applied unconditionally in main.go, overwriting r.RemoteAddr with the forged header value before it reaches any handler. This vulnerability is fixed in 0.24.0."}, {"lang": "es", "value": "HomeBox es un sistema de inventario y organizaci\u00f3n del hogar. Antes de 0.24.0, el limitador de tasa de autenticaci\u00f3n (authRateLimiter) rastrea los intentos fallidos por IP de cliente. Determina la IP del cliente leyendo: 1. el encabezado X-Real-IP, 2. la primera entrada del encabezado X-Forwarded-For, y 3. r.RemoteAddr (direcci\u00f3n de conexi\u00f3n TCP). Estos encabezados se le\u00edan incondicionalmente. Un atacante conect\u00e1ndose directamente a Homebox podr\u00eda falsificar cualquier valor en X-Real-IP, obteniendo efectivamente una nueva identidad de l\u00edmite de tasa por solicitud. Existe una opci\u00f3n TrustProxy en la configuraci\u00f3n (Options.TrustProxy, por defecto falso), pero esta opci\u00f3n nunca fue le\u00edda por ning\u00fan middleware o c\u00f3digo del limitador de tasa. Adem\u00e1s, el middleware.RealIP de chi se aplicaba incondicionalmente en main.go, sobrescribiendo r.RemoteAddr con el valor del encabezado falsificado antes de que llegara a cualquier gestor. Esta vulnerabilidad est\u00e1 corregida en 0.24.0."}], "id": "CVE-2026-27981", "lastModified": "2026-06-17T10:28:00.820", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-27981", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-03-04T16:27:35.371817Z", "version": "2.0.3"}}]}, "published": "2026-03-03T23:15:56.387", "references": [{"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/sysadminsmedia/homebox/security/advisories/GHSA-j86g-v96v-jpp3"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-307"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.24.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "homebox", "source": "cna", "vendor": "sysadminsmedia"}, "product": "homebox", "vendor": "sysadminsmedia"}], "analysis": {"en": {"generated_at": "2026-04-18T10:03:22.796366+00:00", "value": {"mitigation_remediation": ["Upgrade HomeBox to version 0.24.0 or newer, which removes the unvalidated header processing from the rate\u2011limiting logic.", "If an immediate upgrade is not possible, restrict inbound traffic to HomeBox to trusted networks or apply an additional reverse\u2011proxy that strictly validates or removes X\u2011Real\u2011IP and X\u2011Forwarded\u2011For headers before forwarding requests to HomeBox.", "Deploy an application firewall that enforces a global rate limit on authentication attempts regardless of IP header values."], "summary": {"action": "Patch immediately", "impact": "Authentication rate limiting bypass enabling brute force attempts"}, "threat_synthesis": {"affected_systems": "All editions of HomeBox released before version 0.24.0, distributed by sysadminsmedia, are affected. The vulnerability exists regardless of the configured TrustProxy option because it is never consulted by the rate\u2011limiting logic or the middleware. Users of HomeBox installations older than 0.24.0 should treat the product as vulnerable until an update is applied.", "description_and_impact": "HomeBox implements an authentication rate limiter that counts failed attempts by client IP. The service automatically reads the X\u2011Real\u2011IP header, the first entry of X\u2011Forwarded\u2011For, and the TCP remote address, and it applies an unconditional real\u2011IP middleware that overwrites the remote address with the value of X\u2011Real\u2011IP. An attacker can send forged X\u2011Real\u2011IP values, causing each request to appear from a new IP and therefore get a fresh rate\u2011limit counter. This flaw allows an attacker to repeatedly attempt credential logins without triggering the limiter, potentially leading to unauthorized access. The weakness originates from improper restriction of operations within the limit (CWE\u2011307).", "risk_and_exploitability": "The CVSS score of 7.4 classifies this flaw as high severity, and the EPSS score of less than 1\u202f% indicates a low but non\u2011zero probability of exploitation. The vulnerability requires remote network access, and the exploit path is straightforward: connect directly to the HomeBox service or traffic it through a proxy that injects forged X\u2011Real\u2011IP headers. Such an attack does not require privileged input or application misconfiguration beyond the ability to send HTTP requests. Because the flaw is not listed in CISA\u2019s KEV catalog, there are currently no publicly known advanced exploits, but the high severity combined with the simplicity of the attack vector makes it a priority to mitigate immediately."}}}}, "created": "2026-03-04T14:53:34.636759+00:00", "updated": "2026-04-18T10:15:25.865524+00:00", "vendors": ["sysadminsmedia", "sysadminsmedia$PRODUCT$homebox"]}