https://vulnerability.circl.lu/sightings/feed 2026-07-24T19:25:01.761584+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent sightings. https://vulnerability.circl.lu/sighting/02e8d3fe-e25c-44c0-9c69-10b96e589779/export 2026-07-24T19:25:01.782498+00:00 Automation user https://cve.circl.lu/user/automation {"uuid": "02e8d3fe-e25c-44c0-9c69-10b96e589779", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56191", "type": "seen", "source": "https://infosec.exchange/users/vuldb/statuses/116973999988486810", "content": "A lot of offensive activities were identified targeting Microsoft Exchange Server (CVE-2026-56191) https://vuldb.com/vuln/382836/cti", "creation_timestamp": "2026-07-24T08:26:31.920068Z"} 2026-07-24T08:26:31.920068+00:00 https://vulnerability.circl.lu/sighting/acacefb2-e3a4-483d-a2c5-bc113ef991cc/export 2026-07-24T19:25:01.785156+00:00 Automation user https://cve.circl.lu/user/automation {"uuid": "acacefb2-e3a4-483d-a2c5-bc113ef991cc", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "cve-2026-56191", "type": "seen", "source": "https://bsky.app/profile/offseq.bsky.social/post/3mrejek5ycm2q", "content": "Microsoft Exchange Online faces a CRITICAL improper authentication bug (CVE-2026-56191, CVSS 10). Remote attackers can fully compromise systems. Apply the Microsoft patch now: https://radar.offseq.com/threat/cve-2026-56191-cwe-287-improper-authentication-in-microsoft-microsoft-exchange-online-2fb...", "creation_timestamp": "2026-07-24T04:30:29.304532Z"} 2026-07-24T04:30:29.304532+00:00 https://vulnerability.circl.lu/sighting/8c630595-9a28-4bb5-ab32-54bfeaffef1e/export 2026-07-24T19:25:01.785458+00:00 Automation user https://cve.circl.lu/user/automation {"uuid": "8c630595-9a28-4bb5-ab32-54bfeaffef1e", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "cve-2026-56191", "type": "seen", "source": "https://infosec.exchange/users/offseq/statuses/116973071665205351", "content": "CVE-2026-56191: CRITICAL improper authentication in Microsoft Exchange Online (CVSS 10). Remote, unauthenticated attackers can tamper with systems. Official fix available \u2014 patch ASAP. Details: https://radar.offseq.com/threat/cve-2026-56191-cwe-287-improper-authentication-in-microsoft-microsoft-exchange-online-2fb5560625ca8222 #OffSeq #CVE202656191 #ExchangeOnline #Vuln", "creation_timestamp": "2026-07-24T04:30:27.233375Z"} 2026-07-24T04:30:27.233375+00:00 https://vulnerability.circl.lu/sighting/853b8838-7729-48b5-a14d-ff8847290709/export 2026-07-24T19:25:01.785687+00:00 Automation user https://cve.circl.lu/user/automation {"uuid": "853b8838-7729-48b5-a14d-ff8847290709", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56191", "type": "seen", "source": "https://bsky.app/profile/thehackerwire.bsky.social/post/3mreee4ela22q", "content": "\ud83d\udd34 CVE-2026-56191 - Critical (10)\n\nImproper authentication in Microsoft Exchange Online allows an unauthorized attacker to perform t...\n\nhttps://www.thehackerwire.com/vulnerability/CVE-2026-56191/\n\n#infosec #cybersecurity #CVE #vulnerability #security #patchstack", "creation_timestamp": "2026-07-24T03:00:45.907296Z"} 2026-07-24T03:00:45.907296+00:00 https://vulnerability.circl.lu/sighting/6db8a2cb-e84a-4d99-a264-c4fb05baeb5f/export 2026-07-24T19:25:01.785807+00:00 Automation user https://cve.circl.lu/user/automation {"uuid": "6db8a2cb-e84a-4d99-a264-c4fb05baeb5f", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56191", "type": "seen", "source": "https://bsky.app/profile/stackflag.bsky.social/post/3mre3pj76me23", "content": "CVE-2026-56191 - microsoft exchange online\nAn attacker can manipulate data in Microsoft Exchange Online without permission, potentially leading to data corruption or unauthorized changes. This affects users who\u2026\n\nToo many irrelevant or confusing CVEs? Use stackflag.com\n\n#microsoft #CVE #infosec", "creation_timestamp": "2026-07-24T00:26:04.239498Z"} 2026-07-24T00:26:04.239498+00:00