https://vulnerability.circl.lu Contains only the most 10 recent sightings. http://www.rssboard.org/rss-specification python-feedgen en Fri, 24 Jul 2026 19:25:01 +0000 https://vulnerability.circl.lu/sighting/02e8d3fe-e25c-44c0-9c69-10b96e589779/export {"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"} {"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"} https://vulnerability.circl.lu/sighting/02e8d3fe-e25c-44c0-9c69-10b96e589779/export Fri, 24 Jul 2026 08:26:31 +0000 https://vulnerability.circl.lu/sighting/acacefb2-e3a4-483d-a2c5-bc113ef991cc/export {"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"} {"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"} https://vulnerability.circl.lu/sighting/acacefb2-e3a4-483d-a2c5-bc113ef991cc/export Fri, 24 Jul 2026 04:30:29 +0000 https://vulnerability.circl.lu/sighting/8c630595-9a28-4bb5-ab32-54bfeaffef1e/export {"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"} {"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"} https://vulnerability.circl.lu/sighting/8c630595-9a28-4bb5-ab32-54bfeaffef1e/export Fri, 24 Jul 2026 04:30:27 +0000 https://vulnerability.circl.lu/sighting/853b8838-7729-48b5-a14d-ff8847290709/export {"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"} {"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"} https://vulnerability.circl.lu/sighting/853b8838-7729-48b5-a14d-ff8847290709/export Fri, 24 Jul 2026 03:00:45 +0000 https://vulnerability.circl.lu/sighting/6db8a2cb-e84a-4d99-a264-c4fb05baeb5f/export {"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"} {"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"} https://vulnerability.circl.lu/sighting/6db8a2cb-e84a-4d99-a264-c4fb05baeb5f/export Fri, 24 Jul 2026 00:26:04 +0000