{"metadata": {"vulnerability": "cve-2026-109391", "count": 16, "kinds": {"milestone": 4, "sighting": 3, "kev": 0, "other": 9}}, "data": [{"timestamp": "2026-10-12T00:00:00Z", "date_only": false, "value": "2026-10-12T00:00:00.000Z", "kind": "other", "label": "Made public", "source": "cvelistv5 / VulnCheck", "record": "cve-2026-109391", "field": "containers.cna.datePublic"}, {"timestamp": "2026-10-12T14:40:37.988Z", "date_only": false, "value": "2026-10-12T14:40:37.988Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "cve-2026-109391", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-10-12T15:16:39.257Z", "date_only": false, "value": "2026-10-12T15:16:39.257Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "cve-2026-109391", "field": "cveMetadata.datePublished"}, {"timestamp": "2026-10-12T15:16:39.257Z", "date_only": false, "value": "2026-10-12T15:16:39.257Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / VulnCheck", "record": "cve-2026-109391", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2026-10-12T15:34:10.925Z", "date_only": false, "value": "2026-10-12T15:34:10.925938Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117428666053294857", "record": "CVE-2026-109391", "field": "creation_timestamp", "uuid": "c3741032-89c7-4a95-8b1e-7c932a3ea45d", "content": "CVE-2026-109391 Square Squash through commit e73f280 Unauthenticated YAML Deserialization via Symbolication API Square Squash through commit e73f280 contains an insecure deserialization vulnerability that allows unauthenticated attackers to store crafted YAML via the POST /api/1.0/symbolication endpoint. When occurrences referencing the attacker-controlled symbolication UUID are symbolicated, the stored values are passed to YAML.load with SafeYAML in unsafe mode, enabling arbitrary Ruby object deserialization and potential code execution.\nhttps://www.cve.org/CVERecord?id=CVE-2026-109391https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/HJ87QX5ifghttps://github.com/SquareSquash/web/blob/e73f2805f9eb30780a5c213b001f0f4255660fbf/app/controllers/api/v1_controller.rbhttps://github.com/SquareSquash/web/blob/e73f2805f9eb30780a5c213b001f0f4255660fbf/config/preinitializers/safe_yaml.rbhttps://github.com/SquareSquash/web/blob/e73f2805f9eb30780a5c213b001f0f4255660fbf/lib/workers/symbolication_creator.rbhttps://github.com/SquareSquash/web/blob/e73f2805f9eb30780a5c213b001f0f4255660fbf/app/models/symbolication.rbhttps://github.com/SquareSquash/webhttps://www.vulncheck.com/advisories/square-squash-through-commit-e73f280-unauthenticated-yaml-deserialization-via-symbolication-api#Square #Squash#CVE_2026_109391#bot", "url": "https://infosec.exchange/users/cve/statuses/117428666053294857"}, {"timestamp": "2026-10-12T16:17:04Z", "date_only": false, "value": "2026-10-12T16:17:04Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-F7J3-HCHQ-QP35", "record": "GHSA-F7J3-HCHQ-QP35", "field": "database_specific.nvd_published_at"}, {"timestamp": "2026-10-12T16:17:04.373Z", "date_only": false, "value": "2026-10-12T16:17:04.373", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-109391", "record": "FKIE_CVE-2026-109391", "field": "published"}, {"timestamp": "2026-10-12T18:07:19.637Z", "date_only": false, "value": "2026-10-12T18:07:19.637986Z", "kind": "sighting", "label": "Seen", "source": "https://bsky.app/profile/stemshop.bsky.social/post/3mxp4ctlvnz2l", "record": "CVE-2026-109391", "field": "creation_timestamp", "uuid": "f35daec3-c099-43b6-8250-91260fa2b6a9", "content": "\ud83d\udea8 CVE-2026-109391 \u2014 CVSS 9.2 CRITICAL\n\nSquare Squash through commit e73f280 contains an insecure deserialization vulnerability that allows unauthe...\n\n\ud83d\udd0e https://stemshop.top/cve/CVE-2026-109391\n\n#CVE #CyberSecurity #InfoSec", "url": "https://bsky.app/profile/stemshop.bsky.social/post/3mxp4ctlvnz2l"}, {"timestamp": "2026-10-12T18:20:05.176Z", "date_only": false, "value": "2026-10-12T18:20:05.176913Z", "kind": "sighting", "label": "Seen", "source": "https://bsky.app/profile/stackflag.bsky.social/post/3mxp4znimac27", "record": "CVE-2026-109391", "field": "creation_timestamp", "uuid": "81494ebf-1b35-4dfb-b4ab-4e4cf7f481f6", "content": "CVE-2026-109391 - squash\nThe Square Squash service can be tricked into loading specially crafted data through its Symbolication endpoint, which could let an unauthenticated attacker run arbitrary code on the\u2026\n\nToo many irrelevant or confusing CVEs? Use stackflag.com\n\n#squash #square #CVE #infosec", "url": "https://bsky.app/profile/stackflag.bsky.social/post/3mxp4znimac27"}, {"timestamp": "2026-10-12T18:31:34Z", "date_only": false, "value": "2026-10-12T18:31:34Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-F7J3-HCHQ-QP35", "record": "GHSA-F7J3-HCHQ-QP35", "field": "published"}, {"timestamp": "2026-10-12T18:31:34Z", "date_only": false, "value": "2026-10-12T18:31:34Z", "kind": "other", "label": "Updated", "source": "github \u00b7 GHSA-F7J3-HCHQ-QP35", "record": "GHSA-F7J3-HCHQ-QP35", "field": "modified"}, {"timestamp": "2026-10-13T16:40:50.798Z", "date_only": false, "value": "2026-10-13T16:40:50.798651Z", "kind": "other", "label": "Recorded", "source": "cvelistv5 / CISA-ADP", "record": "cve-2026-109391", "field": "containers.adp.0.metrics.0.other.content.timestamp"}, {"timestamp": "2026-10-13T16:40:50.798Z", "date_only": false, "value": "2026-10-13T16:40:50.798651Z", "kind": "other", "label": "Recorded", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-109391", "record": "FKIE_CVE-2026-109391", "field": "metrics.ssvcV203.0.ssvcData.timestamp"}, {"timestamp": "2026-10-13T16:57:23.986Z", "date_only": false, "value": "2026-10-13T16:57:23.986Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "cve-2026-109391", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2026-10-13T16:57:23.986Z", "date_only": false, "value": "2026-10-13T16:57:23.986Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / CISA-ADP", "record": "cve-2026-109391", "field": "containers.adp.0.providerMetadata.dateUpdated"}, {"timestamp": "2026-10-16T18:25:45.343Z", "date_only": false, "value": "2026-10-16T18:25:45.343", "kind": "other", "label": "Updated", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-109391", "record": "FKIE_CVE-2026-109391", "field": "lastModified"}]}