{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-62595", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2025-10-16T19:24:37.266Z", "datePublished": "2025-10-21T16:20:43.809Z", "dateUpdated": "2025-10-21T16:35:48.461Z"}, "containers": {"cna": {"title": "Koa Vulnerable to Open Redirect via Trailing Double-Slash (//) in back Redirect Logic", "problemTypes": [{"descriptions": [{"cweId": "CWE-601", "lang": "en", "description": "CWE-601: URL Redirection to Untrusted Site ('Open Redirect')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/koajs/koa/security/advisories/GHSA-g8mr-fgfg-5qpc", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/koajs/koa/security/advisories/GHSA-g8mr-fgfg-5qpc"}, {"name": "https://github.com/koajs/koa/commit/769fd75cc6b30d72493b370b5a3ae2332ca03c5b", "tags": ["x_refsource_MISC"], "url": "https://github.com/koajs/koa/commit/769fd75cc6b30d72493b370b5a3ae2332ca03c5b"}], "affected": [{"vendor": "koajs", "product": "koa", "versions": [{"version": ">= 2.16.2, < 2.16.3", "status": "affected"}, {"version": ">= 3.0.1, < 3.0.3", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2025-10-21T16:20:43.809Z"}, "descriptions": [{"lang": "en", "value": "Koa is expressive middleware for Node.js using ES2017 async functions. In versions 2.16.2 to before 2.16.3 and 3.0.1 to before 3.0.3, a bypass to CVE-2025-8129 was discovered in the Koa.js framework affecting its back redirect functionality. In certain circumstances, an attacker can manipulate the Referer header to force a user\u2019s browser to navigate to an external, potentially malicious website. This occurs because the implementation incorrectly treats some specially crafted URLs as safe relative paths. Exploiting this vulnerability could allow attackers to perform phishing, social engineering, or other redirect-based attacks on users of affected applications. This issue has been patched in version 3.0.3."}], "source": {"advisory": "GHSA-g8mr-fgfg-5qpc", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/koajs/koa/security/advisories/GHSA-g8mr-fgfg-5qpc", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-10-21T16:35:45.437787Z", "id": "CVE-2025-62595", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-21T16:35:48.461Z"}}]}}

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{"bugzilla": {"description": "koa: Koa Vulnerable to Open Redirect via Trailing Double-Slash (//) in back Redirect Logic", "id": "2405387", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2405387"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "status": "draft"}, "cwe": "CWE-601", "details": ["A flaw was found in Koa. A bypass of CVE-2025-8129 was discovered in the Koa.js framework affecting its back redirect functionality. In certain circumstances, an attacker can manipulate the Referer header to force a user\u2019s browser to navigate to an external, potentially malicious website. This occurs because the implementation incorrectly treats some specially crafted URLs as safe relative paths. This issue allows attackers to perform phishing, social engineering, or other redirect-based attacks on users of affected applications."], "mitigation": {"lang": "en:us", "value": "Applications can use the following workarounds to mitigate this vulnerability:\nDo not treat //host as a safe relative path. Explicitly exclude protocol\u2011relative values from any relative\u2011path branch.\nNormalize the Referer by resolving it with a base (e.g., new URL(rawRef, ctx.href)), then compare resolved.origin (scheme+host+port) to ctx.origin (or ctx.host plus scheme/port) before allowing the redirect."}, "name": "CVE-2025-62595", "package_state": [{"cpe": "cpe:/a:redhat:service_mesh:2", "fix_state": "Not affected", "package_name": "openshift-service-mesh/grafana-rhel8", "product_name": "OpenShift Service Mesh 2"}, {"cpe": "cpe:/a:redhat:service_mesh:2", "fix_state": "Not affected", "package_name": "openshift-service-mesh/istio-cni-rhel8", "product_name": "OpenShift Service Mesh 2"}, {"cpe": "cpe:/a:redhat:service_mesh:2", "fix_state": "Not affected", "package_name": "openshift-service-mesh/istio-must-gather-rhel9", "product_name": "OpenShift Service Mesh 2"}, {"cpe": "cpe:/a:redhat:service_mesh:2", "fix_state": "Not affected", "package_name": "openshift-service-mesh/istio-operator-bundle", "product_name": "OpenShift Service Mesh 2"}, {"cpe": "cpe:/a:redhat:service_mesh:2", "fix_state": "Not affected", "package_name": "openshift-service-mesh/istio-rhel8-operator", "product_name": "OpenShift Service Mesh 2"}, {"cpe": "cpe:/a:redhat:service_mesh:2", "fix_state": "Not affected", "package_name": "openshift-service-mesh/pilot-rhel8", "product_name": "OpenShift Service Mesh 2"}, {"cpe": "cpe:/a:redhat:service_mesh:2", "fix_state": "Not affected", "package_name": "openshift-service-mesh/proxyv2-rhel9", "product_name": "OpenShift Service Mesh 2"}, {"cpe": "cpe:/a:redhat:service_mesh:2", "fix_state": "Not affected", "package_name": "openshift-service-mesh/ratelimit-rhel8", "product_name": "OpenShift Service Mesh 2"}, {"cpe": "cpe:/a:redhat:service_mesh:3", "fix_state": "Not affected", "package_name": "openshift-service-mesh-dev-preview-beta/istio-ztunnel-rhel9", "product_name": "OpenShift Service Mesh 3"}, {"cpe": "cpe:/a:redhat:service_mesh:3", "fix_state": "Not affected", "package_name": "openshift-service-mesh/istio-cni-rhel9", "product_name": "OpenShift Service Mesh 3"}, {"cpe": "cpe:/a:redhat:service_mesh:3", "fix_state": "Not affected", "package_name": "openshift-service-mesh/istio-must-gather-rhel9", "product_name": "OpenShift Service Mesh 3"}, {"cpe": "cpe:/a:redhat:service_mesh:3", "fix_state": "Not affected", "package_name": "openshift-service-mesh/istio-pilot-rhel9", "product_name": "OpenShift Service Mesh 3"}, {"cpe": "cpe:/a:redhat:service_mesh:3", "fix_state": "Not affected", "package_name": "openshift-service-mesh/istio-proxyv2-rhel9", "product_name": "OpenShift Service Mesh 3"}, {"cpe": "cpe:/a:redhat:service_mesh:3", "fix_state": "Not affected", "package_name": "openshift-service-mesh/istio-rhel9-operator", "product_name": "OpenShift Service Mesh 3"}, {"cpe": "cpe:/a:redhat:service_mesh:3", "fix_state": "Not affected", "package_name": "openshift-service-mesh/istio-sail-operator-bundle", "product_name": "OpenShift Service Mesh 3"}, {"cpe": "cpe:/a:redhat:service_mesh:3", "fix_state": "Not affected", "package_name": "openshift-service-mesh-tech-preview/istio-ztunnel-rhel9", "product_name": "OpenShift Service Mesh 3"}, {"cpe": "cpe:/a:redhat:rhdh:1", "fix_state": "Not affected", "package_name": "rhdh/rhdh-hub-rhel9", "product_name": "Red Hat Developer Hub"}, {"cpe": "cpe:/a:redhat:openshift_devspaces:3:", "fix_state": "Not affected", "package_name": "devspaces/code-rhel9", "product_name": "Red Hat OpenShift Dev Spaces"}], "public_date": "2025-10-21T16:20:43Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-62595\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-62595\nhttps://github.com/koajs/koa/commit/769fd75cc6b30d72493b370b5a3ae2332ca03c5b\nhttps://github.com/koajs/koa/security/advisories/GHSA-g8mr-fgfg-5qpc"], "threat_severity": "Moderate"}