All news with #cross site scripting tag

🔔 CISA added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog — CVE-2025-66376, a cross-site scripting (XSS) issue in Synacor Zimbra Collaboration Suite (ZCS). Evidence indicates active exploitation, prompting inclusion under BOD 22-01 guidance. While the binding directive applies to FCEB agencies, CISA strongly urges all organizations to prioritize remediation. CISA will continue to update the KEV Catalog as new exploited vulnerabilities are identified.

🔒 Apple has issued Background Security Improvements to address CVE-2026-20643, a cross-origin flaw in WebKit's Navigation API that could be exploited to bypass the same-origin policy when processing maliciously crafted web content. Apple fixed the issue by improving input validation and shipped patches in iOS 26.3.1 (a), iPadOS 26.3.1 (a), macOS 26.3.1 (a), and macOS 26.3.2 (a). Researcher Thomas Espach is credited with the report. Users should keep Automatically Install enabled in Settings > Privacy and Security to receive these lightweight fixes promptly.

🔒 Apple has pushed its first Background Security Improvements release to patch a WebKit vulnerability tracked as CVE-2026-20643 on iPhone, iPad, and Mac without requiring a full OS upgrade. The flaw is a cross-origin issue in the Navigation API that could allow malicious web content to bypass the browser's Same Origin Policy, and Apple says it fixed the bug with improved input validation. Credited to researcher Thomas Espach, the update is available on iOS 26.3.1, iPadOS 26.3.1, and macOS 26.3.1/26.3.2; Apple warns that uninstalling Background Security Improvements removes all prior background patches and reverts the device to the baseline OS.

🔒 Siemens reports multiple vulnerabilities in COMOS across V10.4–V10.6 that could permit arbitrary code execution, cross-site scripting, denial-of-service, credential exposure, and TLS man-in-the-middle attacks. Siemens has published updates for several affected lines (notably V10.4.5 and V10.5.2) and is preparing additional fixes; some issues remain unpatched. Apply vendor updates where available, follow Siemens' countermeasures for unpatched versions, minimize network exposure of COMOS, and contact Siemens ProductCERT for assistance and timelines.

🔒 The ZOLL ePCR iOS mobile application (version 2.6.7) contains a WebView input-sanitization flaw (CVE-2025-12699) that can reflect attacker-controlled strings into rendered HTML/JavaScript. Proof-of-concept testing shows injected scripts may read local application files, potentially exposing device telemetry and protected health information (PHI). CISA assigns a CVSS v3.1 base score of 5.5 (MEDIUM), notes the issue is not remotely exploitable, and reports no known public exploitation. ZOLL decommissioned the iOS app in May 2025 and has no replacement planned.

🔍 CyberArk researchers disclosed they exploited a cross-site scripting (XSS) vulnerability in the web panel of the StealC infostealer to retrieve active session cookies and operational metadata. Researcher Ari Novick used the weakness to link a StealC customer, dubbed YouTubeTA, to the theft of roughly 390,000 passwords and over 30 million cookies from victims seeking cracked Adobe software on YouTube. Analysis of hardware fingerprints, language settings, time zones and IP addresses indicated the operator used an Apple Pro with an M3 chip, supported English and Russian, operated in an Eastern European time zone and connected via Ukrainian ISP TRK Cable TV, underscoring how weaknesses in criminal tooling can expose both victims and customers to supply-chain risk.

🔍 Cybersecurity researchers disclosed an XSS vulnerability in the web-based control panel used by operators of the StealC information stealer. By exploiting it they collected system fingerprints, monitored active sessions, and stole session cookies from the infrastructure itself, according to CyberArk researcher Ari Novick. The panel's leaked source code and the stealer's distribution through the YouTube Ghost Network and other lures amplified the operational insights researchers gained. Full technical details were withheld to avoid enabling copycats.

🔒 A cross-site scripting (XSS) flaw in the web control panel for the StealC info‑stealer allowed researchers to observe active operator sessions, capture session cookies and harvest browser and hardware fingerprints. CyberArk exploited the issue to identify an operator’s location and device details after a panel user failed to route traffic through a VPN. The company withheld technical disclosure to avoid a quick fix and said the finding may disrupt StealC’s MaaS ecosystem.

🔒Siemens has disclosed multiple vulnerabilities affecting RUGGEDCOM APE1808 devices, tied to cross-site scripting and a path traversal flaw (CVE-2025-40891, CVE-2025-40892, CVE-2025-40893, CVE-2025-40898). The issues include stored HTML/JavaScript injection in Time Machine Snapshot Diff, Reports, and Asset List features, and an authenticated path traversal in Arc data import that can enable arbitrary file writes. Siemens is preparing fixes and advises contacting Siemens ProductCERT, segregating and protecting device networks, and following Siemens operational security guidance until patches are available.

🛡️MITRE has published its annual CWE Top 25, ranking the most dangerous software weaknesses identified from 39,080 CVEs. Cross-site scripting (XSS) remains top, with SQL injection and cross-site request forgery following; several memory- and injection-related flaws shifted positions. New entries include classic, stack and heap buffer overflows, improper access control, authorization bypass via user-controlled keys, and resource allocation issues. Experts warn that weak credential protection and authorization failures are driving growing real-world risk in SaaS and API-driven environments.

🔒 Ivanti has released a critical patch for an unauthenticated Cross-Site Scripting (XSS) flaw in EPM that can allow attackers to inject malicious device scan data via the incoming API and execute JavaScript in administrator dashboards, enabling full admin-session takeover. The vendor shipped EPM 2024 SU4 SR1 to address CVE-2025-10573 (CVSS 9.6) and other arbitrary-code and file-write vulnerabilities; Ivanti said it had not observed customer exploitation at disclosure.

⚠️ Festo SE & Co. KG's LX Appliance contains a cross-site scripting (XSS) vulnerability tied to the video.js library (CVE-2021-23414) that can allow crafted course content to execute scripts in high-privilege user sessions. The issue affects LX Appliance versions prior to June 2023 and has a CVSS v3.1 base score of 6.1. Festo coordinated disclosure with CERT@VDE and published advisory FSA-202301. Administrators should update affected appliances and apply recommended network isolation and secure remote access controls.

⚠️ CISA has added an actively exploited cross-site scripting flaw, CVE-2021-26829, to its Known Exploited Vulnerabilities catalog after reports of operational abuse against OpenPLC ScadaBR. The XSS affects Windows 1.12.4 and Linux 0.9.1 via system_settings.shtm and was used to deface HMI pages and disable logs. Federal civilian agencies must remediate by December 19, 2025; operators should apply vendor fixes, change default credentials, enable logging and monitor for web-layer manipulation and outbound callbacks.

🔒 Rockwell Automation disclosed multiple vulnerabilities in FactoryTalk DataMosaix Private Cloud that can enable MFA bypass and persistent cross-site scripting. The issues, tracked as CVE-2025-11084 and CVE-2025-11085, affect 7.11 and selected 8.x releases and carry CVSS v4 scores up to 8.6, indicating high severity. Rockwell has released patches and CISA advises applying updates, minimizing network exposure, and isolating control networks to reduce remote exploitation risk.

⚠️ Advantech DeviceOn/iEdge versions 2.0.2 and earlier contain multiple remotely exploitable vulnerabilities, including XSS and several path-traversal flaws assigned CVE-2025-64302, CVE-2025-62630, CVE-2025-59171, and CVE-2025-58423. Successful exploitation may lead to denial-of-service, arbitrary file disclosure, or remote code execution with system-level permissions. CISA notes the products are EOL and recommends upgrading to DeviceOn, isolating devices from the internet, and using secure remote access methods to reduce risk.

🔒 Siemens released security updates for SiPass integrated to address four vulnerabilities—an Accusoft ImageGear heap-based buffer overflow, stored cross-site scripting, an authorization bypass via user-controlled keys, and recoverable password storage. Exploitation could enable account compromise, data manipulation, impersonation, or arbitrary code execution on affected servers. Siemens recommends updating to V3.0, restricting access to trusted personnel, and avoiding untrusted image uploads; CISA advises isolating devices and using secure remote access.

⚠️ CISA added one vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog: CVE-2025-27915, a cross-site scripting (XSS) flaw in Synacor Zimbra Collaboration Suite (ZCS). CISA notes that XSS remains a common attack vector that can enable credential theft, session hijacking, and distribution of malicious content. Under BOD 22-01, Federal Civilian Executive Branch agencies must remediate KEV items by prescribed due dates. CISA urges all organizations to prioritize timely remediation and reduce exposure.

⚠️ Hitachi Energy reports multiple vulnerabilities in the MSM product that are exploitable remotely with low attack complexity. An XSS flaw in the EmbedThis GoAhead goform/formTest endpoint (name parameter) can allow HTML injection, while an assertion in open62541's fuzz_binary_decode can cause a crash. CVE-2023-53155 (CVSS 7.2) and CVE-2024-53429 (CVSS 7.5) are assigned. Vendors and CISA recommend disconnecting affected devices from internet-facing networks and following product-specific guidance.

⚠️ Schneider Electric disclosed a cross-site scripting flaw (CWE-79) affecting numerous Altivar drives, the ATVdPAC communication module, and the ILC992 InterLink Converter. Tracked as CVE-2025-7746, the issue is remotely exploitable with low attack complexity and can allow an attacker to read or modify data via device web interfaces. Schneider has released a fix for the ATVdPAC (Version 25.0) and recommends disabling webservers when not needed, segmenting networks, blocking HTTP/port 80 access, and using VPNs until further patches are provided.

🛡️ MSRC reports that Cross-Site Scripting (XSS) remains a persistent threat across legacy portals and modern single-page applications, with hundreds of cases triaged in the past year. Between July 2024 and July 2025, MSRC mitigated over 970 XSS cases and awarded more than $900,000 in bounties, spanning low-impact self-XSS to zero-click critical exploits. The post describes MSRC’s severity matrix that combines data classification and exploit conditions, outlines servicing scope and exclusion criteria, and publishes a practical submission checklist. Developers and researchers are encouraged to adopt context-aware encoding, Content Security Policy (CSP), and secure-by-default frameworks to reduce exposure.