{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-66256", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-07-24T09:55:56.665Z", "datePublished": "2026-08-13T13:53:34.930Z", "dateUpdated": "2026-08-13T16:18:21.390Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.shindig:shindig-common", "product": "Apache Shindig Common", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "*", "status": "affected", "version": "0", "versionType": "semver"}]}, {"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.shindig:shindig-social-api", "product": "Apache Shindig Social-Api", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "*", "status": "affected", "version": "0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Daryle Bourque, Horizon3.ai"}, {"lang": "en", "type": "finder", "value": "Noah King, Horizon3.ai"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>** UNSUPPORTED WHEN ASSIGNED ** Deserialization of Untrusted Data vulnerability in Apache Shindig.</p><p>This issue affects Apache Shindig: all versions.</p><p>Users with access to the Shindig REST API can send specially-crafted requests to trigger arbitrary code execution on the server.</p><p>As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative or restrict access to the instance to trusted users.</p><p>NOTE: This vulnerability only affects products that are no longer supported by the maintainer.</p>"}], "value": "** UNSUPPORTED WHEN ASSIGNED ** Deserialization of Untrusted Data vulnerability in Apache Shindig.\n\nThis issue affects Apache Shindig: all versions.\n\nUsers with access to the Shindig REST API can send specially-crafted requests to trigger arbitrary code execution on the server.\n\nAs this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative or restrict access to the instance to trusted users.\n\nNOTE: This vulnerability only affects products that are no longer supported by the maintainer."}], "metrics": [{"other": {"content": {"text": "important"}, "type": "Textual description of severity"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-502", "description": "CWE-502 Deserialization of Untrusted Data", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-08-13T13:53:34.930Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://lists.apache.org/thread/opgpnhk149614gx6vcy3lvyjnycw8mkh"}], "source": {"discovery": "EXTERNAL"}, "tags": ["unsupported-when-assigned"], "title": "Apache Shindig Common, Apache Shindig Social-Api: Remote Code Execution via XStream deserialization (OpenSocial REST API)", "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-08-13T15:53:08.626107Z", "id": "CVE-2026-66256", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-13T15:53:12.739Z"}}, {"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/08/13/7"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-08-13T16:18:21.390Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/08/13/7"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-08-13T16:18:21.390Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2026-66256", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-08-13T15:53:08.626107Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-13T15:53:00.063Z"}}], "cna": {"tags": ["unsupported-when-assigned"], "title": "Apache Shindig Common, Apache Shindig Social-Api: Remote Code Execution via XStream deserialization (OpenSocial REST API)", "source": {"discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "finder", "value": "Daryle Bourque, Horizon3.ai"}, {"lang": "en", "type": "finder", "value": "Noah King, Horizon3.ai"}], "metrics": [{"other": {"type": "Textual description of severity", "content": {"text": "important"}}}], "affected": [{"vendor": "Apache Software Foundation", "product": "Apache Shindig Common", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "*"}], "packageName": "org.apache.shindig:shindig-common", "collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected"}, {"vendor": "Apache Software Foundation", "product": "Apache Shindig Social-Api", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "*"}], "packageName": "org.apache.shindig:shindig-social-api", "collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected"}], "references": [{"url": "https://lists.apache.org/thread/opgpnhk149614gx6vcy3lvyjnycw8mkh", "tags": ["vendor-advisory"]}], "x_generator": {"engine": "Vulnogram 0.2.0"}, "descriptions": [{"lang": "en", "value": "** UNSUPPORTED WHEN ASSIGNED ** Deserialization of Untrusted Data vulnerability in Apache Shindig.\n\nThis issue affects Apache Shindig: all versions.\n\nUsers with access to the Shindig REST API can send specially-crafted requests to trigger arbitrary code execution on the server.\n\nAs this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative or restrict access to the instance to trusted users.\n\nNOTE: This vulnerability only affects products that are no longer supported by the maintainer.", "supportingMedia": [{"type": "text/html", "value": "<p>** UNSUPPORTED WHEN ASSIGNED ** Deserialization of Untrusted Data vulnerability in Apache Shindig.</p><p>This issue affects Apache Shindig: all versions.</p><p>Users with access to the Shindig REST API can send specially-crafted requests to trigger arbitrary code execution on the server.</p><p>As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative or restrict access to the instance to trusted users.</p><p>NOTE: This vulnerability only affects products that are no longer supported by the maintainer.</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-502", "description": "CWE-502 Deserialization of Untrusted Data"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-08-13T13:53:34.930Z"}}}, "cveMetadata": {"cveId": "CVE-2026-66256", "state": "PUBLISHED", "dateUpdated": "2026-08-13T16:18:21.390Z", "dateReserved": "2026-07-24T09:55:56.665Z", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "datePublished": "2026-08-13T13:53:34.930Z", "assignerShortName": "apache"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.shindig:shindig-common", "product": "Apache Shindig Common", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "*", "status": "affected", "version": "0", "versionType": "semver"}]}, {"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.shindig:shindig-social-api", "product": "Apache Shindig Social-Api", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "*", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@apache.org"}], "cveTags": [{"sourceIdentifier": "security@apache.org", "tags": ["unsupported-when-assigned"]}], "descriptions": [{"lang": "en", "value": "** UNSUPPORTED WHEN ASSIGNED ** Deserialization of Untrusted Data vulnerability in Apache Shindig.\n\nThis issue affects Apache Shindig: all versions.\n\nUsers with access to the Shindig REST API can send specially-crafted requests to trigger arbitrary code execution on the server.\n\nAs this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative or restrict access to the instance to trusted users.\n\nNOTE: This vulnerability only affects products that are no longer supported by the maintainer."}], "id": "CVE-2026-66256", "lastModified": "2026-08-13T17:17:34.350", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.2, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-66256", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-13T15:53:08.626107Z", "version": "2.0.3"}}]}, "published": "2026-08-13T15:19:56.557", "references": [{"source": "security@apache.org", "url": "https://lists.apache.org/thread/opgpnhk149614gx6vcy3lvyjnycw8mkh"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/08/13/7"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-502"}], "source": "security@apache.org", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "enrichment": {"confidence": 80.0, "confidence_source": "matching", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 80.0, "source": "matching"}]}, "original": {"product": "Apache Shindig Common", "source": "cna", "vendor": "Apache Software Foundation"}, "product": "shindig", "vendor": "apache"}], "created": "2026-08-13T15:45:03.815455+00:00", "updated": "2026-08-14T12:14:56.618774+00:00", "vendors": ["apache", "apache$PRODUCT$shindig"]}