{"vulnerability": "CVE-2026-13355", "sightings": [{"uuid": "56ddfbb5-1a74-4798-b5dc-d716ef46b2e0", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-13355", "type": "seen", "source": "https://bsky.app/profile/stackflag.bsky.social/post/3mw3gyreuev2n", "content": "CVE-2026-13355 - meta box frontend submission\nThe Meta Box Frontend Submission plugin for WordPress (up to version 3.11.0, and related extensions up to their listed versions) lets a visitor change page content and\u2026\n\nToo many irrelevant or confusing CVEs? Use stackflag.com\n\n#metabox #CVE #infosec", "creation_timestamp": "2026-09-22T05:00:06.652333Z"}, {"uuid": "5b927591-7b03-438b-a3c9-841a07468657", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-13355", "type": "seen", "source": "https://bsky.app/profile/stemshop.bsky.social/post/3mw3kqqbc4t2r", "content": "\ud83d\udea8 CVE-2026-13355 \u2014 CVSS 9.8 CRITICAL\n\nThe Meta Box AIO plugin for WordPress is vulnerable to Privilege Escalation to Administrator in versions up...\n\n\ud83d\udd0e https://stemshop.top/cve/CVE-2026-13355\n\n#CVE #CyberSecurity #InfoSec", "creation_timestamp": "2026-09-22T06:07:11.911074Z"}, {"uuid": "d7a38f2f-5efb-4409-b69e-7cf30912ec18", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "cve-2026-13355", "type": "seen", "source": "https://infosec.exchange/users/offseq/statuses/117313517927990850", "content": "Privilege escalation (CRITICAL, CVE-2026-13355) in Meta Box Frontend Submission <=4.5.6 & User Profile <=3.11.0 lets unauthenticated attackers gain admin on WordPress. Patch status TBD \u2014 restrict plugin use & monitor activity. Details: https://radar.offseq.com/threat/cve-2026-13355-cwe-269-improper-privilege-management-in-meta-box-meta-box-frontend-submission-7d7ee5c391cbe4a8 #OffSeq #WordPress #CVE2026_13355", "creation_timestamp": "2026-09-22T07:30:27.164578Z"}, {"uuid": "e67cb532-1349-470d-ac60-f64f1c1005d9", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "cve-2026-13355", "type": "seen", "source": "https://bsky.app/profile/offseq.bsky.social/post/3mw3pflesvv2e", "content": "Meta Box Frontend Submission (<=4.5.6) hit by CRITICAL CVE-2026-13355: unauthenticated attackers can become WordPress admins. Restrict plugin use & monitor activity. Patch pending \u2014 act now. https://radar.offseq.com/threat/cve-2026-13355-cwe-269-improper-privilege-management-in-meta-box-meta-box-...", "creation_timestamp": "2026-09-22T07:30:27.444138Z"}, {"uuid": "6b1870bf-f44d-4bc6-8707-b27352d578cf", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-13355", "type": "published-proof-of-concept", "source": "https://t.me/GithubRedTeam/103008", "content": "\ud83d\udea8 GitHub \u76d1\u63a7\u6d88\u606f\u63d0\u9192\n\n\ud83d\udea8 \u53d1\u73b0\u5173\u952e\u8bcd\uff1a #CVE-2026 #POC #Exploit\n\n\ud83d\udce6 \u9879\u76ee\u540d\u79f0\uff1a CVE-2026-13355\n\ud83d\udc64 \u9879\u76ee\u4f5c\u8005\uff1a murrez\n\ud83d\udee0 \u5f00\u53d1\u8bed\u8a00\uff1a Python\n\u2b50 Star\u6570\u91cf\uff1a 0  |  \ud83c\udf74 Fork\u6570\u91cf\uff1a 0\n\ud83d\udcc5 \u66f4\u65b0\u65f6\u95f4\uff1a 2026-09-22 06:10:13\n\n\ud83d\udcdd \u9879\u76ee\u63cf\u8ff0\uff1a\nCVE-2026-13355 PoC \u2014 Meta Box AIO \u22643.11.0 unauthenticated admin privesc via MB Frontend Submission + User Profile shortcode chain. Python check/exploit, FOFA helper, mass scan with live flow.\n\n\ud83d\udd17 \u70b9\u51fb\u8bbf\u95ee\u9879\u76ee\u5730\u5740", "creation_timestamp": "2026-09-22T10:00:06.665130Z"}, {"uuid": "94b0d33f-cba2-4c88-9a16-fe555cfc6762", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-13355", "type": "seen", "source": "https://bsky.app/profile/postac001.bsky.social/post/3mw44ult65223", "content": "Meta Box AIO v3.11.0\u4ee5\u524d\u3067\u3001\u8a8d\u8a3c\u3055\u308c\u3066\u3044\u306a\u3044\u653b\u6483\u8005\u304c\u7ba1\u7406\u8005\u6a29\u9650\u3092\u596a\u53d6\u3057\u3001\u4efb\u610f\u306e\u6295\u7a3f\u5185\u5bb9\u3092\u4e0a\u66f8\u304d\u3067\u304d\u308b\u8106\u5f31\u6027\u304c\u3042\u308b\u3002\nCVE-2026-13355 CVSS 9.8 | CRITICAL", "creation_timestamp": "2026-09-22T11:31:28.827265Z"}, {"uuid": "eeb58d83-ec98-4409-b8bf-b4246125d808", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-13355", "type": "published-proof-of-concept", "source": "https://t.me/GithubRedTeam/103008", "content": "\ud83d\udea8 GitHub \u76d1\u63a7\u6d88\u606f\u63d0\u9192\n\n\ud83d\udea8 \u53d1\u73b0\u5173\u952e\u8bcd\uff1a #CVE-2026 #POC #Exploit\n\n\ud83d\udce6 \u9879\u76ee\u540d\u79f0\uff1a CVE-2026-13355\n\ud83d\udc64 \u9879\u76ee\u4f5c\u8005\uff1a murrez\n\ud83d\udee0 \u5f00\u53d1\u8bed\u8a00\uff1a Python\n\u2b50 Star\u6570\u91cf\uff1a 0  |  \ud83c\udf74 Fork\u6570\u91cf\uff1a 0\n\ud83d\udcc5 \u66f4\u65b0\u65f6\u95f4\uff1a 2026-09-22 06:10:13\n\n\ud83d\udcdd \u9879\u76ee\u63cf\u8ff0\uff1a\nCVE-2026-13355 PoC \u2014 Meta Box AIO \u22643.11.0 unauthenticated admin privesc via MB Frontend Submission + User Profile shortcode chain. Python check/exploit, FOFA helper, mass scan with live flow.\n\n\ud83d\udd17 \u70b9\u51fb\u8bbf\u95ee\u9879\u76ee\u5730\u5740", "creation_timestamp": "2026-09-23T00:00:23.307139Z"}]}