{"id":"GHSA-34f4-24c9-rgcm","kind":"vulnerability","aliases":["GHSA-34f4-24c9-rgcm"],"related":[],"title":"CVE-2026-118029 - Unverified ownership of the default Athena query result location in AWS SDK for pandas","description":"CVE-2026-118029 - Unverified ownership of the default Athena query result location in AWS SDK for pandas\n\n### CVE-2026-118029 - Unverified ownership of the default Athena query result location in AWS SDK for pandas\n\nBulletin ID: 2026-153-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 10/28/2026 08:30 AM PDT\n\nDescription:\n\nAWS SDK for pandas (awswrangler) is an open-source Python library that integrates pandas with AWS data services such as Amazon Athena, Amazon S3, and AWS Glue. We identified CVE-2026-118029 in the Athena module, where unverified ownership of the default query result location could allow a remote user to read Athena query results and tamper with result sets returned to the caller via a pre-created S3 bucket.\n\nImpacted versions: awswrangler < 3.16.1\n\nResolution:\n\nThis issue has been addressed in AWS SDK for pandas version 3.16.1, released May 8, 2026. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.\n\nWorkarounds:\n\nVerify that the default Athena result bucket in each account and Region is owned by your own account, and set an explicit result location or enforce a workgroup result configuration.\n\nReferences:\n\n- CVE-2026-118029\n- GHSA-34f4-24c9-rgcm\n\nAcknowledgement:\n\nWe would like to thank Dan Gansel of Upwind Security for collaborating on this issue through the coordinated vulnerability disclosure process.\n\n Please email aws-security@amazon.com with any security questions or concerns.","summary":"AWS SDK for pandas (awswrangler) trusts the default Athena query result S3 location without checking who owns it. A remote user who pre-creates that bucket can read Athena query results and tamper with the result sets returned to the caller.","severity":"medium","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["athena","aws","data-engineering","lab-disclosure","package","python"],"not_affected_if":["explicit-result-location","version-3.16.1-or-later","workgroup-result-config"],"how_to_check":"- Check the installed version with `pip show awswrangler` and look for a version below `3.16.1`.\n- Confirm in each AWS account and Region that the default Athena result bucket is owned by your own account.\n- Check whether an explicit result location or a workgroup result configuration is already set.","fix":"- Upgrade awswrangler to `3.16.1` or later.\n- Until upgraded, verify the default Athena result bucket in each account and Region is owned by your account, and set an explicit result location or enforce a workgroup result configuration.\n- Patch any forked or derivative code to include the fix.","status":"open","published_at":"2026-10-28T00:00:00+00:00","first_seen_at":"2026-10-28T16:04:30+00:00","triaged_at":"2026-10-28T16:06:32+00:00","updated_at":"2026-10-28T16:06:32+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-10-28T16:06:32Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade awswrangler to `3.16.1` or later.\n- Until upgraded, verify the default Athena result bucket in each account and Region is owned by your account, and set an explicit result location or enforce a workgroup result configuration.\n- Patch any forked or derivative code to include the fix.","reach":"internet","title":"AWS SDK for pandas: unverified Athena result bucket lets attackers read query results","impact":"medium","summary":"AWS SDK for pandas (awswrangler) trusts the default Athena query result S3 location without checking who owns it. A remote user who pre-creates that bucket can read Athena query results and tamper with the result sets returned to the caller.","category":"package","nicknames":[],"who_cares":["python","aws","athena","data-engineering"],"confidence":0.7,"needs_auth":"unknown","worst_case":"Remote attacker reads Athena query results and tampers with returned result sets","analyst_note":"","how_to_check":"- Check the installed version with `pip show awswrangler` and look for a version below `3.16.1`.\n- Confirm in each AWS account and Region that the default Athena result bucket is owned by your own account.\n- Check whether an explicit result location or a workgroup result configuration is already set.","needs_analyst":false,"not_affected_if":["explicit-result-location","workgroup-result-config","version-3.16.1-or-later"],"who_is_affected":"Teams running awswrangler below `3.16.1` that use Athena through the library and rely on the default query result location. Exposure depends on whether the default result bucket in the account and Region could be pre-created by someone else. Teams with an explicit result location or an enforced workgroup result configuration, or who run only newer versions, can skip it.","user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"medium"},"cost_usd":0.000697,"input_tokens":3838,"output_tokens":626,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-118029':3A,82C,99C,166C,282C '-153':117C '-2026':2A,81C,98C,165C,281C '08':129C '10/28/2026':128C '2026':116C,226C '24c9':21A,26A,286C '3.16.1':209C,222C '30':130C '34f4':20A,25A,285C '8':225C 'account':258C,266C 'acknowledg':288C 'address':215C 'allow':181C 'amazon':155C,157C 'athena':9A,28B,46B,67B,88C,105C,156C,169C,187C,253C 'attent':125C 'aw':14A,29B,38B,93C,110C,118C,120C,134C,150C,160C,217C 'aws-security@amazon.com':312C 'awswrangl':42B,138C,208C 'bucket':64B,205C,255C 'bulletin':114C 'caller':79B,198C 'check':52B 'code':240C 'collabor':300C 'concern':318C 'configur':278C 'content':121C 'coordin':306C 'could':180C 'creat':62B,203C 'cve':1A,80C,97C,164C,280C 'dan':294C 'data':31B,151C 'data-engin':30B 'date':127C 'default':8A,45B,87C,104C,176C,252C 'deriv':239C 'descript':133C 'disclosur':35B,308C 'email':311C 'enforc':274C 'engin':32B 'ensur':235C 'explicit':270C 'fix':247C 'fork':237C 'gansel':295C 'ghsa':19A,24A,284C 'ghsa-34f4-24c9-rgcm':18A,23A,283C 'glue':161C 'id':115C 'identifi':163C 'impact':206C 'import':123C 'incorpor':244C 'integr':147C 'issu':212C,303C 'lab':34B 'lab-disclosur':33B 'latest':232C 'librari':145C 'like':291C 'locat':12A,50B,91C,108C,179C,272C 'may':224C 'modul':170C 'new':246C 'open':142C 'open-sourc':141C 'own':54B,262C 'ownership':5A,84C,101C,173C 'packag':36B 'panda':17A,41B,96C,113C,137C,148C,220C 'patch':242C 'pdt':132C 'pleas':310C 'pre':61B,202C 'pre-creat':60B,201C 'process':309C 'public':126C 'python':37B,144C 'queri':10A,47B,68B,89C,106C,177C,188C 'question':316C 'read':66B,186C 'recommend':228C 'refer':279C 'region':260C 'releas':223C 'remot':57B,183C 'requir':124C 'resolut':210C 'result':11A,48B,69B,74B,90C,107C,178C,189C,193C,254C,271C,277C 'return':76B,195C 'rgcm':22A,27A,287C 's3':49B,158C,204C 'scope':119C 'sdk':15A,39B,94C,111C,135C,218C 'secur':298C,315C 'servic':152C 'set':75B,194C,268C 'sourc':143C 'tamper':71B,191C 'thank':293C 'trust':43B 'type':122C 'unverifi':4A,83C,100C,172C 'upgrad':229C 'upwind':297C 'user':58B,184C 'verifi':249C 'version':207C,221C,233C 'via':199C 'vulner':307C 'without':51B 'workaround':248C 'workgroup':276C 'would':290C","nicknames":[],"mitigations":[],"who_affected":"Teams running awswrangler below `3.16.1` that use Athena through the library and rely on the default query result location. Exposure depends on whether the default result bucket in the account and Region could be pre-created by someone else. Teams with an explicit result location or an enforced workgroup result configuration, or who run only newer versions, can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-28T00:00:00+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"lab","external_id":"https://aws.amazon.com/security/security-bulletins/rss/2026-153-aws/#GHSA-34f4-24c9-rgcm","url":"https://aws.amazon.com/security/security-bulletins/rss/2026-153-aws/","severity":null,"published_at":"2026-10-28T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-28T16:04:30+00:00","fetched_at":"2026-10-28T16:04:30+00:00","note":"AWS: CVE-2026-118029 - Unverified ownership of the default Athena query result location in AWS SDK for pandas"}],"documents":[{"id":11262,"url":"https://aws.amazon.com/security/security-bulletins/rss/2026-153-aws/","title":"AWS: CVE-2026-118029 - Unverified ownership of the default Athena query result location in AWS SDK for pandas","kind":"advisory","source":"lab","text":"CVE-2026-118029 - Unverified ownership of the default Athena query result location in AWS SDK for pandas\n\n### CVE-2026-118029 - Unverified ownership of the default Athena query result location in AWS SDK for pandas\n\nBulletin ID: 2026-153-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 10/28/2026 08:30 AM PDT\n\nDescription:\n\nAWS SDK for pandas (awswrangler) is an open-source Python library that integrates pandas with AWS data services such as Amazon Athena, Amazon S3, and AWS Glue. We identified CVE-2026-118029 in the Athena module, where unverified ownership of the default query result location could allow a remote user to read Athena query results and tamper with result sets returned to the caller via a pre-created S3 bucket.\n\nImpacted versions: awswrangler < 3.16.1\n\nResolution:\n\nThis issue has been addressed in AWS SDK for pandas version 3.16.1, released May 8, 2026. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.\n\nWorkarounds:\n\nVerify that the default Athena result bucket in each account and Region is owned by your own account, and set an explicit result location or enforce a workgroup result configuration.\n\nReferences:\n\n- CVE-2026-118029\n- GHSA-34f4-24c9-rgcm\n\nAcknowledgement:\n\nWe would like to thank Dan Gansel of Upwind Security for collaborating on this issue through the coordinated vulnerability disclosure process.\n\n Please email aws-security@amazon.com with any security questions or concerns.","published_at":"2026-10-28T00:00:00+00:00","relation":"advisory","confidence":null,"note":null}],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}