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Citrix Patches Six NetScaler Flaws Allowing File Read and Denial-of
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CVE-2026-86206, CVE-2026-86207: N-able N-central Authentication Bypass (FIXED)
Rapid7 disclosed two chained N-able N-central flaws, CVE-2026-86206 and CVE-2026-86207, enabling unauthenticated admin account creation; patched in 2026.3 Hotfix 3.
Rapid7 researchers found CVE-2026-86206 (semicolon/Forwarded access-control bypass, CWE-791, CVSSv4 6.9) and CVE-2026-86207 (UserTwoFactorLogin authentication bypass, CWE-305, CVSSv4 7.7) in the latest N-able N-central. Chained, they let a remote unauthenticated attacker create an attacker-controlled System administrator account. The bugs stem from Envoy and Jetty disagreeing on the requested path and whether the client is local. N-able patched both in N-central 2026.3 Hotfix 3, following the earlier CVE-2026-18577 authentication bypass.
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Forminator WordPress Flaw Can Enable Unauthenticated RCE via Malicious PHP Uploads
Wordfence disclosed CVE-2026-15748, a critical unauthenticated file upload flaw enabling RCE in the Forminator Forms WordPress plugin, patched in version 1.56.2.
Wordfence reported CVE-2026-15748 (CVSS 9.8) in Forminator Forms, a WordPress plugin with over 600,000 active installations, allowing unauthenticated attackers to upload arbitrary PHP files and achieve remote code execution. The flaw stems from insufficient file type validation in the handle_file_upload() function, and exploitation requires a form containing both a File Upload field and a Select field, plus a custom upload storage root lacking .htaccess PHP protection. All versions up to and including 1.56.1 are affected; version 1.56.2 released July 31, 2026 fixes the issue. Wordfence also disclosed CVE-2026-15826 (CVSS 9.8), an authentication bypass in User Profile Builder (40,000+ installs) letting unauthenticated attackers log in as administrator, fixed in version 3.16.5 on July 16, 2026.
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Week in review: High-severity LPE vulnerability in the Linux kernel, cPanel 0-day exploited for months
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Vulnerability landscape in Q4 2025
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Microsoft Patch Tuesday for Oct. 2021 — Snort rules and prominent vulnerabilities
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Microsoft Exchange Vulnerability CVE-2026-62911: What Administrators Should Do and How Zscaler Can Help
High-severity authentication bypass CVE-2026-62911 in Exchange Server has public exploit code; about 22,000 servers remain unpatched and internet-exposed.
Microsoft's August 2026 Patch Tuesday fixed CVE-2026-62911 (CVSS 8.0), an authentication bypass affecting Exchange Server 2016, 2019 and Subscription Edition. Successful exploitation lets an attacker with basic privileges take over all mailboxes on the targeted server, including reading and sending email and downloading attachments. As of September 1, Shadowserver identified roughly 22,000 unpatched, internet-exposed Exchange servers, including about 6,200 in the US and 5,100 in Germany. NCSC-NL confirmed working exploit code is publicly available, while CISA has not yet reported exploitation in the wild.
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KindaRails2Shell threatens Ruby on Rails apps (CVE-2026-66066)
Critical CVE-2026-66066 in Rails' Active Storage/libvips allows unauthenticated arbitrary file read and possible RCE; active exploitation now observed.
CVE-2026-66066 (KindaRails2Shell), discovered by Ethiack researchers and independently by RyotaK of GMO Flatt Security, lets attackers upload crafted files that exploit libvips' handling of specialty formats to read arbitrary files, including process environment secrets, potentially escalating to RCE. Default Rails 7.0+ setups using Active Storage with the vips processor are affected before versions 7.2.3.2, 8.0.5.1, and 8.1.3.1; fixes shipped July 29, 2026, with VIPS_BLOCK_UNTRUSTED as a partial mitigation. Proof-of-concept exploits circulated after disclosure, and VulnCheck updated that it observed active exploitation originating from a single French IP establishing C2 to a host in Israel. Akamai deployed WAF rules, but experts stress patching and credential rotation over filtering alone.
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Five Critical WordPress Plugin and Theme Flaws Enable Site Takeover or RCE
Five critical flaws (CVSS 9.8–10.0) in WPMU DEV Dashboard, Avada, TranslatePress, Pods, and GiveWP enable WordPress admin takeover and RCE.
Wordfence and Patchstack disclosed five critical flaws in WordPress plugins and themes: WPMU DEV Dashboard, Avada, TranslatePress, Pods, and GiveWP. The issues include unauthenticated authentication bypass (CVE-2026-76581), arbitrary file write leading to RCE (CVE-2026-18431), administrator account takeover via password-reset URL exposure (CVE-2026-19632), privilege escalation (CVE-2026-19598), and PHP object injection to RCE (CVE-2026-82222, CVSS 10.0). Patchstack says the GiveWP flaw chains an unsafe unserialize helper, attacker-controlled donation data, and a gadget chain in shipped code.
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Another SharePoint RCE exploited: Patch, then rotate your machine keys (CVE-2026-50522)
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⚡ Weekly Recap: WordPress RCE, SonicWall 0-Days, AI Service Attacks, SharePoint 0
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Week in review: 74k Fortinet firewall credentials stolen, Splunk Enterprise RCE under active attack
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Cisco Releases Security Updates for Actively Exploited SD
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Week in review: Cisco patches SD-WAN 0-day, unpatched Microsoft Exchange Server flaw exploited
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Week in review: cPanel vulnerability actively exploited, DigiCert breach, LinkedIn job scams
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