Acronis security advisory SEC-10986 / update UPD-2609-3d72-20a7 (wired by BleepingComputer 15 September 2026) covers CVE-2026-87886, a high-severity Linux local privilege escalation in Acronis Backup plugin for cPanel & WHM and the Acronis Backup extension for Plesk. Acronis assigns severity 7.8. A low-privileged attacker can raise privileges on a vulnerable Linux host without user interaction; further exploit detail withheld while patches propagate. Acronis says exploitation has been detected in the wild in limited, targeted attacks against cPanel & WHM plugin deployments (assessment based on a single report from a potentially affected customer; no public IoCs released). Affected: cPanel & WHM plugin builds earlier than 1.9.3.1021 (fixed 1.9.3 HF3); Plesk extension builds earlier than 1.8.11.638 (fixed 1.8.11). Apply those updates immediately. Primary: Acronis SEC-10986; wire: BleepingComputer 15 Sep. UPDATE 16 September 2026: CISA added CVE-2026-87886 to KEV (same alert as Cisco ISE CVE-2026-76460). Distinct from desk card cve-2026-60004 (Gitea / Red Heron).
BleepingComputer (15 September 2026) relays Wordfence/Defiant telemetry that attackers are actively exploiting CVE-2026-27540 in the premium WooCommerce Wholesale Lead Capture WordPress plugin. Unauthenticated AJAX action wwlc_file_upload_handler accepts a user-controlled file_settings allowlist, letting attackers permit .php uploads and drop webshells (researcher: Teemu Saarentaus). Affected: versions 2.0.3.1 and older; fixed in 2.0.3.2 (released 20 February). Wordfence reports 100,000+ blocked attacks with spikes around 4–17 June, 1 July, and 30 August 2026; The Hacker News (16 September) cites CVSS 9.8 and lists recent attacker IPs (including 92.241.13.213, 31.59.129.150, 92.241.13.140, 23.137.105.214, 23.180.120.140, 104.194.9.138, 187.75.114.36, 114.10.43.203, 37.114.144.209 and IPv6 2a0f:85c1:840:5389::1). Hunt admin-ajax.php calls to wwlc_file_upload_handler, unexpected PHP under uploads (e.g. shell.php), and unknown admin accounts; upgrade to 2.0.3.2+. Primary wire: BleepingComputer; UPDATE 17 Sep: CVSS + IoCs from THN/Wordfence. Correction (26 Oct 2026): the CVE record for CVE-2026-27540, published by Patchstack as the assigning authority, scores it 9.0 under CVSS 3.1 (attack complexity high); the 9.8 shown before is the figure The Hacker News cited. (source: CVE record CVE-2026-27540)
BleepingComputer — WooCommerce Wholesale Lead Capture CVE-2026-27540 (15 Sep 2026)
WA Cyber Security Unit advisory 20260915001 (15 September 2026, TLP:CLEAR) highlights CVE-2026-69829, a Critical remote code execution flaw in Microsoft Windows Shell with CVSS 9.8. WASOC states successful exploitation could allow an unauthenticated attacker to execute arbitrary code and potentially fully compromise affected systems. Affected products/versions are as listed by Microsoft on the MSRC update-guide entry for CVE-2026-69829 (JS-rendered; versions not mirrored here beyond vendor listing). WASOC reports no exploitation observed on Western Australian Government networks at time of writing and recommends applying Microsoft’s fixes per normal patch timeframes. Primary: Microsoft MSRC CVE-2026-69829; AU wire: WASOC 20260915001.
Microsoft MSRC — CVE-2026-69829 (Windows Shell RCE)
WA Cyber Security Unit advisory 20260915003 (15 September 2026, TLP:CLEAR) relays Canonical LXD updates for eight Critical issues (CVE-2026-66897, CVE-2026-66898, CVE-2026-63300, CVE-2026-63299, CVE-2026-63297, CVE-2026-63296, CVE-2026-63294, CVE-2026-62420), each listed at CVSS 9.9. Successful exploitation can let a remote attacker achieve root command execution on the LXD host. Affected lines per WASOC: LXD 6.x prior to 6.10; 5.21.x prior to 5.21.7; 5.0.x prior to 5.0.9; all versions prior to 4.0.13. Canonical GitHub advisory GHSA-q39m-8fx9-42fv (CVE-2026-66897 example) documents instance template path traversal to arbitrary host file write as root, with patched versions including 4.0.13, 5.0.9, 5.21.7, 6.9-ab8fad2, and 6.10; related LXD GHSAs cover further path-traversal / privilege issues in the same wave. WASOC reports no exploitation observed on Western Australian Government networks at time of writing. Patch to vendor-fixed LXD builds; review Canonical LXD security advisories for the full set. Primary: Canonical LXD GHSA index; AU wire: WASOC 20260915003.
Apple security content for iOS/iPadOS 26.7 (support 149041, released 14 September 2026) and macOS Golden Gate 27 (149035) lists CVE-2026-86869 in ImageIO: out-of-bounds write addressed with improved bounds checking; Apple impact text on 26.7 is “Processing a maliciously crafted image may lead to unexpected app termination” (credits: Niels Hofmans, Meta Red Team X, Geonha Lee, Chris Bailey — Short Circuit). UPDATE 26 Sep 2026: ironPeak blog EX-ARRR publishes full technical disclosure — heap overflow in libAppleEXR.dylib / CompressedInterleave4 when decoding crafted OpenEXR; researcher states Apple triage classified the report as 0-click code execution via iMessage EXR image payload, with BlastDoor not decoding EXR and Spotlight/ImageIO thumbnailing providing the side-door reach; PAC/MIE still constrain reliable exploitation on modern Apple silicon. Reported May 2026; fixed across iOS/iPadOS/macOS 27 family builds as CVE-2026-86869 per researcher timeline. No CVSS from Apple. Patch: current iOS/iPadOS 26.7+ / macOS 27 (Golden Gate) / equivalent trains. Distinct from bulk desk card apple-ios27-20260914 (does not spotlight this CVE). Primary: Apple iOS 26.7 security content; technical write-up: ironPeak.
Apple — iOS 26.7 and iPadOS 26.7 security content (CVE-2026-86869 ImageIO, 14 Sep 2026)
JFrog Security Research (CVE published 14 September 2026; industry wire 22 Sep) documents CVE-2026-90898 in MaximHQ Bifrost (open-source AI gateway / HTTP transport): with default governance.auth_config.is_enabled=false, an unauthenticated POST /api/mcp/client registering a stdio-type MCP client starts attacker-chosen command+args as the Bifrost process user before any MCP handshake. JFrog/CNA CVSS 3.1 9.8 Critical (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H); CWE-306/284. Stock binary binds management API to localhost by default; official Docker image binds 0.0.0.0 so published ports expose the management API. Fix: transports/v2.1.0 returns 403 for unauthenticated stdio registration (PR #6757). Affected: Bifrost HTTP transport < 2.1.0; 1.6.x through 1.6.11 and transports/v2.0.0 lack the fix. Workaround: enable management auth and firewall the listener; treat previously exposed unauth instances as compromised and rotate virtual keys/provider credentials. Primary: JFrog advisory; metadata: CVE.report; wire: The Hacker News 22 Sep 2026.
JFrog — Bifrost unauth RCE via MCP stdio (CVE-2026-90898)
cPanel Security advisory (14 September 2026) warns of a critical privilege-escalation flaw in LiteSpeed Web Server Enterprise: on shared-hosting servers a malicious low-privilege website user could gain root-level access, bypassing account isolation including CageFS, and access or alter other sites and the server. Affected: LiteSpeed Web Server Enterprise prior to v6.3.7. Fix: upgrade to 6.3.7 or later. cPanel/LiteSpeed publish the forced update command /usr/local/lsws/admin/misc/lsup.sh -f -v 6.3.7 (auto-update may lag; as of THN 15 Sep, download page still listed 6.3.6 as stable). LiteSpeed store announcement for 6.3.7 (11 September 2026) lists three security changes (lscgid auth, internal redirect URL validation, block internal-use env vars from .htaccess) without naming a CVE or privilege-escalation root cause; neither cPanel nor LiteSpeed assigned a public CVE or CVSS for this Enterprise web-server issue as of 15 September 2026 desk check. Advisory does not state in-the-wild exploitation for this Enterprise flaw (distinct from earlier actively exploited LiteSpeed cPanel-plugin issues CVE-2026-48172 and CVE-2026-54420 already on this desk). OpenLiteSpeed not named in the cPanel advisory. Primary: cPanel; vendor release: LiteSpeed 6.3.7 announcement; wire: The Hacker News (15 Sep 2026).
Antonio De Turris (deturris.io, 14 September 2026) details two authorization bypasses in n8n’s AI Agents feature. CVE-2026-65015: a read-only Project Viewer can instruct an agent’s run_node_tool to execute arbitrary n8n nodes (including HTTP Request) with the project’s credentials; if Execute Command is enabled on self-hosted, that path can reach host command execution. Affected: all versions before 2.29.8, plus 2.30.0; fixed in 2.29.8 and 2.30.1. GitHub GHSA-x5vx-c2c8-m3w9 rates High (CVSS 4.0 overall 7.2). CVE-2026-59207: the agent MCP client sends credential headers without enforcing “Allowed HTTP Request Domains”, so a use-only credential holder can point MCP at an attacker host and exfiltrate the secret. Affected: all before 2.27.4, plus 2.28.0; fixed in 2.27.4 and 2.28.1. GHSA-h44j-f5r5-ph73 High (CVSS 4.0 overall 7.1). Reported June 2026; vendor advisories published with the fixes. Primary: researcher writeup; vendor: n8n GitHub security advisories.
De Turris — n8n AI Agents authorization bypasses (14 Sep 2026)
Silent Signal (14 September 2026) documents a pre-authentication vulnerability chain in the IBM Db2 Mirror for i web interface (Db2MirrorServlet on the IBM i administrative Liberty instance; lab IBM i V7R5, GUI WAR build timestamp late 2025). The write-up describes how authentication/validation filters can be confused, enabling unauthenticated reach into powerful admin features (arbitrary file read via log/trace viewers, attacker-influenced writes into an expanded WAR path that becomes JSP execution in Liberty, then a native helper crossing to QSECOFR on the local IBM i system). No CVE identifier is assigned in the post; the author withholds exploit/JSP payload bodies and frames the piece as vulnerability mechanics plus hardening guidance. Confirm IBM PSIRT/bulletin status for your Db2 Mirror for i / IBM i web stack build before declaring patched. Primary: Silent Signal; no separate vendor bulletin URL confirmed at desk time.
Silent Signal — Db2 Mirror for i pre-auth RCE chain (14 Sep 2026)
Cisco PSIRT advisory cisco-sa-esa-inj-2bLVGmhX (14 September 2026) covers CVE-2026-76461, a Critical SQL injection in email parsing of Cisco AsyncOS Software for Cisco Secure Email Gateway (physical and virtual, any configuration). Unauthenticated remote attackers can send a crafted email with malicious SQL statements and gain command execution as root on the underlying OS. Cisco CVSS 3.1 base 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H); CWE-89; Bug CSCwu56234. Not affected: Secure Email and Web Manager, Secure Web Appliance. Cisco PSIRT became aware of active exploitation in September 2026; Cloud customers with detected malicious activity were contacted directly; Cloud fleet already upgraded to 16.5.0-780. IoC guidance: grep mail_logs for suspicious SQL (example COPY.*TO PROGRAM); also review external network/firewall logs because root access can erase on-box evidence. No workarounds. Fixed AsyncOS: 15.5 and earlier → 15.5.5-014; 16.0 → 16.0.4-302; 16.5 → 16.5.0-780 (Cisco strongly recommends 16.5.0-780). CISA added CVE-2026-76461 to KEV with FCEB remediation due 17 September 2026 (wire: BleepingComputer / THN 15 Sep). Same-day Cisco also shipped other critical SEG/SEWM fixes (CVE-2026-76440/76441/20353/76443) without claimed in-the-wild use — covered here only as context, not separate desk cards. Primary: Cisco PSIRT; wires: BleepingComputer, The Hacker News, SecurityWeek (15 Sep 2026).
Apple published security-content pages dated 14 September 2026 for major releases including iOS 27 and iPadOS 27 (support.apple.com/en-us/149034; 100+ CVE entries on that page alone), macOS Tahoe 26.7 (149042), macOS Sequoia 15.8 (149043), Safari 27 (149039), plus tvOS/watchOS/visionOS 27 and macOS Golden Gate 27. Highlighted iOS 27 entries (Apple does not publish CVSS): sandbox breakout CVE-2026-65354; sandboxed app to kernel privileges CVE-2026-84607; WebKit universal cross-site scripting via crafted webarchive CVE-2026-86898; ImageIO/remote code-execution class issues including CVE-2026-65414; privileged-network IPSec authentication bypass CVE-2026-65329 (also listed on earlier 26.6.x content). No “actively exploited” callouts observed on the fetched iOS 27 page. UPDATE 16 September 2026 desk: macOS Golden Gate 27 security content (support.apple.com/en-us/149035) re-fetched — 200+ CVE entries on that page alone; SecurityWeek wire summarised ~200 fixes across the iOS 27 / Golden Gate 27 family. Primary remains Apple iOS/iPadOS 27; Golden Gate URL retained as secondary. Separate from prior desk card apple-ios-2661-20260817.
F5 Labs Sensor Intel (11 September 2026; BleepingComputer 14 September) reports a sustained August 2026 mass-scanning campaign against internet-exposed Vite development servers harvesting cloud credentials and IaC state. Activity is anchored on CVE-2026-39364, an unauthenticated server.fs.deny / file-read bypass via query parameters such as ?raw, ?import&raw, or ?import&url&inline on /@fs/ requests (GitHub advisory GHSA-v2wj-q39q-566r, published 6–7 April 2026). GitHub rates CVSS 4.0 8.2 (CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N); F5 also cites CVSS 7.5 High for the same CVE. Affected: Vite 7.1.0–7.3.1 and 8.0.0–8.0.4 (also vite-plus ≤0.1.15). Patched: 7.3.2, 8.0.5, and current patched lines on older branches per vendor. F5 honeypots saw ~807 session-grouped attacks and ~32,000 raw events in August, wordlisting .env files, AWS/Azure credential paths, Terraform/serverless state, and /proc environ; scanners also reused older Vite bypasses CVE-2025-30208, CVE-2025-31125 (CISA KEV), and CVE-2024-45811. Exposure usually comes from --host / server.host or Docker port maps (often 5173). Mitigations: upgrade; do not expose dev ports; block /@fs/; rotate secrets if an unpatched Vite was reachable. Primary: F5 Labs; vendor: GitHub advisory; secondary: BleepingComputer.
