CVE-2026-39825

{"id": "CVE-2026-39825", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-39825", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-08T16:46:43.329507Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security@golang.org", "affectedData": [{"vendor": "Go standard library", "product": "net/http/httputil", "versions": [{"status": "affected", "version": "0", "lessThan": "1.25.10", "versionType": "semver"}, {"status": "affected", "version": "1.26.0-0", "lessThan": "1.26.3", "versionType": "semver"}], "packageName": "net/http/httputil", "collectionURL": "https://pkg.go.dev", "defaultStatus": "unaffected", "programRoutines": [{"name": "cleanQueryParams"}, {"name": "ReverseProxy.ServeHTTP"}]}]}], "published": "2026-05-07T20:16:43.390", "references": [{"url": "https://go.dev/cl/770541", "tags": ["Patch"], "source": "security@golang.org"}, {"url": "https://go.dev/issue/78948", "tags": ["Issue Tracking"], "source": "security@golang.org"}, {"url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M", "tags": ["Release Notes"], "source": "security@golang.org"}, {"url": "https://pkg.go.dev/vuln/GO-2026-4976", "tags": ["Vendor Advisory"], "source": "security@golang.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "ReverseProxy can forward queries containing parameters not visible to Rewrite functions. When used with a Rewrite function, or a Director function which parses query parameters, ReverseProxy sanitizes the forwarded request to remove query parameters which are not parsed by url.ParseQuery. ReverseProxy does not take ParseQuery's limit on the total number of query parameters (controlled by GODEBUG=urlmaxqueryparams=N) into account. This can permit ReverseProxy to forward a request containing a query parameter that is not visible to the Rewrite function. For example, the query \"a1=x&a2=x&...&a10000=x&hidden=y\" can forward the parameter \"hidden=y\" while hiding it from the proxy's Rewrite function."}, {"lang": "es", "value": "ReverseProxy puede reenviar consultas que contienen par\u00e1metros no visibles para las funciones Rewrite. Cuando se utiliza con una funci\u00f3n Rewrite, o una funci\u00f3n Director que analiza los par\u00e1metros de consulta, ReverseProxy sanea la solicitud reenviada para eliminar los par\u00e1metros de consulta que no son analizados por url.ParseQuery. ReverseProxy no tiene en cuenta el l\u00edmite de ParseQuery sobre el n\u00famero total de par\u00e1metros de consulta (controlado por GODEBUG=urlmaxqueryparams=N). Esto puede permitir a ReverseProxy reenviar una solicitud que contiene un par\u00e1metro de consulta que no es visible para la funci\u00f3n Rewrite. Por ejemplo, la consulta \u2019a1=x&a2=x&...&a10000=x&hidden=y\u2019 puede reenviar el par\u00e1metro \u2019hidden=y\u2019 mientras lo oculta de la funci\u00f3n Rewrite del proxy."}], "lastModified": "2026-10-26T20:10:00.160", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1C966EF3-C51C-4239-B5FC-C44A5202FEC8", "versionEndExcluding": "1.25.10"}, {"criteria": "cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "522E4CD0-2B99-4363-9C78-0BAFD988A2D6", "versionEndExcluding": "1.26.3", "versionStartIncluding": "1.26.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@golang.org"}