{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/drupal-11.x--11.3.14/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Drupal (\u003c 10.6.13)","Drupal (11.x \u003c 11.3.14)","Drupal (11.4.x \u003c 11.4.4)"],"_cs_severities":["high"],"_cs_tags":["web-application","vulnerability","xss","data-breach","drupal"],"_cs_type":"advisory","_cs_vendors":["Drupal"],"content_html":"\u003cp\u003eCERT-FR has issued an advisory detailing multiple vulnerabilities found in Drupal, a popular content management system. These vulnerabilities, including CVE-2026-15916, CVE-2026-15917, and CVE-2026-55805, can be exploited by an attacker to achieve indirect remote code injection (XSS) and breach data confidentiality. The affected versions include Drupal 11.4.x prior to 11.4.4, Drupal 11.x prior to 11.3.14, and all Drupal versions prior to 10.6.13. The immediate impact of these vulnerabilities is the potential exposure of sensitive user or system data and the execution of malicious scripts within user browsers, which could lead to session hijacking, defacement, or further compromise of client systems. These issues highlight the ongoing risk of web application vulnerabilities and the critical need for timely patching to protect against unauthorized access and client-side attacks.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker identifies a vulnerable Drupal instance running one of the affected versions (Drupal 11.4.x prior to 11.4.4, 11.x prior to 11.3.14, or prior to 10.6.13) via public exposure or internal network access.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages an unspecified vulnerability (e.g., CVE-2026-15916, related to XSS) by crafting and injecting malicious input, such as JavaScript code, into a susceptible component of the Drupal application.\u003c/li\u003e\n\u003cli\u003eThe Drupal application processes and stores or reflects the unsanitized input without proper encoding, making the malicious code accessible to legitimate users.\u003c/li\u003e\n\u003cli\u003eWhen a legitimate user's browser renders the affected Drupal page, the injected malicious script executes within the user's browser context, potentially leading to session hijacking, defacement, or redirection to attacker-controlled sites.\u003c/li\u003e\n\u003cli\u003eSeparately, or as part of a chained attack, the attacker exploits another unspecified vulnerability (e.g., CVE-2026-15917, CVE-2026-55805, related to data confidentiality) to gain unauthorized access to sensitive data within the Drupal application.\u003c/li\u003e\n\u003cli\u003eThe attacker sends specially crafted requests to the vulnerable Drupal instance, which, due to the identified vulnerabilities, improperly discloses confidential information.\u003c/li\u003e\n\u003cli\u003eThe attacker collects the exposed confidential data, which may include user information, system configurations, or other proprietary details, and maintains potential access through client-side scripting capabilities.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of these vulnerabilities can lead to significant consequences for organizations utilizing affected Drupal versions. The XSS vulnerabilities (e.g., CVE-2026-15916) enable attackers to inject arbitrary web scripts into pages viewed by legitimate users, potentially leading to session cookie theft, credential harvesting, website defacement, or redirection to malicious sites. The data confidentiality breaches (e.g., CVE-2026-15917, CVE-2026-55805) allow unauthorized access to sensitive information stored within the Drupal application, which could include personal user data, proprietary business information, or system configurations. This exposure can result in compliance violations, reputational damage, and further targeted attacks against affected users or the organization.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eImmediately apply the security updates provided by Drupal for SA-CORE-2026-010, SA-CORE-2026-011, and SA-CORE-2026-012 to patch CVE-2026-15916, CVE-2026-15917, and CVE-2026-55805.\u003c/li\u003e\n\u003cli\u003eEnsure all Drupal instances are upgraded to versions 11.4.4 or later for 11.4.x branches, 11.3.14 or later for 11.x branches, and 10.6.13 or later for 10.x branches, as specified in the Drupal security bulletins.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for unusual requests containing script-like content or anomalous access patterns to sensitive endpoints, as such behavior could indicate attempts to exploit the XSS or data confidentiality vulnerabilities.\u003c/li\u003e\n\u003cli\u003eRegularly review and audit web application firewall (WAF) configurations to ensure they are equipped to detect and block common web attack techniques, including Cross-Site Scripting.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-07-16T12:57:42Z","date_published":"2026-07-16T12:57:42Z","id":"https://feed.craftedsignal.io/briefs/2026-07-multiple-drupal-vulnerabilities/","summary":"Multiple vulnerabilities have been discovered in Drupal, allowing an attacker to achieve indirect remote code injection via Cross-Site Scripting (XSS) and compromise data confidentiality across various versions.","title":"Multiple Vulnerabilities Discovered in Drupal Leading to XSS and Data Confidentiality Breach","url":"https://feed.craftedsignal.io/briefs/2026-07-multiple-drupal-vulnerabilities/"}],"language":"en","title":"CraftedSignal Threat Feed - Drupal (11.x \u003c 11.3.14)","version":"https://jsonfeed.org/version/1.1"}