{"vulnerability": "CVE-2026-56403", "sightings": [{"uuid": "3c14145e-ad3a-4148-ac5d-5e131366a26f", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56403", "type": "seen", "source": "https://bsky.app/profile/lambdawatchdog.bsky.social/post/3mrufeefodh2o", "content": "\ud83d\udd0d Lambda Watchdog detected that CVE-2026-56403 is no longer present in latest AWS Lambda base image scans. https://github.com/aws/aws-lambda-base-images/issues/608 #AWS #Lambda #Security #CVE #DevOps #SecOps", "creation_timestamp": "2026-07-30T12:01:25.970705Z"}, {"uuid": "857bea99-d02d-4660-839d-1a85bef03d34", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56403", "type": "seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/3mosxt34h4i2k", "content": "CVE-2026-56403 - Expat Integer Overflow\nCVE ID : CVE-2026-56403\n \n Published : June 21, 2026, 3:43 p.m. | 1\u00a0hour, 59\u00a0minutes ago\n \n Description : libexpat before 2.8.2 has an integer overflow in storeAtts.\n \n Severity: 6.9 | MEDIUM\n \n Visit the link for more details, such as C...", "creation_timestamp": "2026-06-21T18:10:50.041119Z"}, {"uuid": "5f4c806a-8d12-4709-b1a2-79775e252dba", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56403", "type": "seen", "source": "https://bsky.app/profile/slackers.it/post/3mp5ncaeykp26", "content": "3/9\n\nhttps://www.cve.org/CVERecord?id=CVE-2026-56403\n    https://www.cve.org/CVERecord?id=CVE-2026-56404\n    https://www.cve.org/CVERecord?id=CVE-2026-56405\n    https://www.cve.org/CVERecord?id=CVE-2026-56406\n    https://www.cve.org/CVERecord?id=CVE-2026-56407", "creation_timestamp": "2026-06-26T00:01:44.630303Z"}, {"uuid": "9544739b-cb8f-4939-a919-520fe10d1834", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56403", "type": "seen", "source": "https://bsky.app/profile/lambdawatchdog.bsky.social/post/3mr5r5wyy4j2t", "content": "\n\ud83d\udea8 New HIGH CVE detected in AWS Lambda \ud83d\udea8\nCVE-2026-56403 impacts expat in 6 Lambda base images.\n\nDetails: https://github.com/aws/aws-lambda-base-images/issues/608\nMore: https://lambdawatchdog.com/\n\n#AWS #Lambda #CVE #CloudSecurity #Serverless", "creation_timestamp": "2026-07-21T12:01:18.826154Z"}]}