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    <title>Most recent sightings.</title>
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      <title>14a640e5-d92b-4311-8045-3352eb1ef6e9</title>
      <link>https://vulnerability.circl.lu/sighting/14a640e5-d92b-4311-8045-3352eb1ef6e9/export</link>
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      <content:encoded>{"uuid": "14a640e5-d92b-4311-8045-3352eb1ef6e9", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-103635", "type": "seen", "source": "https://bsky.app/profile/infosec.skyfleet.blue/post/incqhz6ztghal", "content": "CVE-2026-103635: Apache DataSketches: datasketches-cpp: Out-of-bounds read in compact Theta sketch deserialization allows denial of service via a crafted sketch", "creation_timestamp": "2026-10-10T11:27:12.818230Z"}</content:encoded>
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      <pubDate>Sat, 10 Oct 2026 11:27:12 +0000</pubDate>
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      <title>150783ad-b062-4c2d-ae82-5e77d3687579</title>
      <link>https://vulnerability.circl.lu/sighting/150783ad-b062-4c2d-ae82-5e77d3687579/export</link>
      <description>{"uuid": "150783ad-b062-4c2d-ae82-5e77d3687579", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-103635", "type": "seen", "source": "https://infosec.exchange/users/cve/statuses/117416168857684139", "content": "CVE-2026-103635 Apache DataSketches: datasketches-cpp: Out-of-bounds read in compact Theta sketch deserialization allows denial of service via a crafted sketch Out-of-bounds read in the compact Theta sketch deserialization of Apache DataSketches C++ (repo: datasketches-cpp).\ncompact_theta_sketch::deserialize() and wrapped_compact_theta_sketch::wrap() read header fields before checking that the input was long enough. For the compressed format, the size check could be defeated by a 32-bit overflow, and two header fields that control decoding were not validated; this also affected deserialization from a stream. A crafted or truncated sketch could cause a read past the end of the input. In the compressed case the over-read can be large, and the bytes read can become part of the deserialized sketch. This can cause a crash (denial of service) and could expose adjacent memory contents.\nThis issue affects Apache DataSketches C++: from 3.1.0 before 5.3.0. Only applications that deserialize Theta sketches from untrusted sources are affected.\nUsers are recommended to upgrade to version 5.3.0, which fixes this issue.\nhttps://www.cve.org/CVERecord?id=CVE-2026-103635https://lists.apache.org/thread/15b86y9jstco39kzppjw7l5kvhjvwqvvhttps://github.com/apache/datasketches-cpp/releases/tag/5.3.0#apache #ApacheSoftwareFoundation #ApacheDataSketches#CVE_2026_103635#bot", "creation_timestamp": "2026-10-10T10:35:54.610433Z"}</description>
      <content:encoded>{"uuid": "150783ad-b062-4c2d-ae82-5e77d3687579", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-103635", "type": "seen", "source": "https://infosec.exchange/users/cve/statuses/117416168857684139", "content": "CVE-2026-103635 Apache DataSketches: datasketches-cpp: Out-of-bounds read in compact Theta sketch deserialization allows denial of service via a crafted sketch Out-of-bounds read in the compact Theta sketch deserialization of Apache DataSketches C++ (repo: datasketches-cpp).\ncompact_theta_sketch::deserialize() and wrapped_compact_theta_sketch::wrap() read header fields before checking that the input was long enough. For the compressed format, the size check could be defeated by a 32-bit overflow, and two header fields that control decoding were not validated; this also affected deserialization from a stream. A crafted or truncated sketch could cause a read past the end of the input. In the compressed case the over-read can be large, and the bytes read can become part of the deserialized sketch. This can cause a crash (denial of service) and could expose adjacent memory contents.\nThis issue affects Apache DataSketches C++: from 3.1.0 before 5.3.0. Only applications that deserialize Theta sketches from untrusted sources are affected.\nUsers are recommended to upgrade to version 5.3.0, which fixes this issue.\nhttps://www.cve.org/CVERecord?id=CVE-2026-103635https://lists.apache.org/thread/15b86y9jstco39kzppjw7l5kvhjvwqvvhttps://github.com/apache/datasketches-cpp/releases/tag/5.3.0#apache #ApacheSoftwareFoundation #ApacheDataSketches#CVE_2026_103635#bot", "creation_timestamp": "2026-10-10T10:35:54.610433Z"}</content:encoded>
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      <pubDate>Sat, 10 Oct 2026 10:35:54 +0000</pubDate>
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