{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-46840/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":10,"id":"CVE-2026-46840"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["REST Data Services (24.2.0-26.1.0)"],"_cs_severities":["critical"],"_cs_tags":["oracle","rds","rest","vulnerability","cve-2026-46840","takeover"],"_cs_type":"advisory","_cs_vendors":["Oracle"],"content_html":"\u003cp\u003eCVE-2026-46840 is a highly critical vulnerability affecting Oracle REST Data Services (ORDS), specifically the Backend-as-a-Service component. The vulnerability impacts versions 24.2.0 through 26.1.0. An unauthenticated attacker with network access via HTTPS can exploit this flaw to completely compromise an ORDS instance. Successful exploitation leads to full control of the ORDS instance and may also cause significant impact on other products that rely on the compromised ORDS instance due to the scope change aspect of the vulnerability. This presents a substantial risk to organizations utilizing affected versions of Oracle REST Data Services, potentially allowing attackers to gain unauthorized access to sensitive data, modify system configurations, or disrupt critical services.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker identifies a vulnerable Oracle REST Data Services instance accessible via HTTPS.\u003c/li\u003e\n\u003cli\u003eAttacker sends a specially crafted HTTPS request to the vulnerable Backend-as-a-Service component.\u003c/li\u003e\n\u003cli\u003eThe malicious request exploits a flaw within the ORDS application, bypassing authentication checks.\u003c/li\u003e\n\u003cli\u003eThe vulnerability allows the attacker to execute arbitrary code within the ORDS instance.\u003c/li\u003e\n\u003cli\u003eAttacker leverages the code execution to escalate privileges within the ORDS environment.\u003c/li\u003e\n\u003cli\u003eAttacker gains complete control over the ORDS instance, achieving full administrative access.\u003c/li\u003e\n\u003cli\u003eThe attacker can now access sensitive data, modify configurations, or disrupt the ORDS service.\u003c/li\u003e\n\u003cli\u003eDue to the scope change impact, the attacker pivots to compromise other products or services that rely on the now-compromised ORDS instance, expanding the impact of the attack.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-46840 can result in a complete takeover of Oracle REST Data Services. This can lead to unauthorized access to sensitive data, modification of critical system configurations, and disruption of essential services. The vulnerability's potential to impact additional products amplifies the risk, potentially exposing a wider range of systems and data to compromise. Given the CVSS base score of 10.0, the impact is considered critical, affecting confidentiality, integrity, and availability.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the patch provided by Oracle to address CVE-2026-46840 on all affected Oracle REST Data Services instances (versions 24.2.0-26.1.0).\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u0026quot;Detect CVE-2026-46840 Exploitation Attempt via Malicious HTTPS Request\u0026quot; to identify exploitation attempts in web server logs.\u003c/li\u003e\n\u003cli\u003eImplement network segmentation to limit the scope of potential compromise in case of successful exploitation, mitigating the \u0026quot;scope change\u0026quot; impact mentioned in the overview.\u003c/li\u003e\n\u003cli\u003eMonitor outbound network connections originating from ORDS servers for unusual activity after patching, which could indicate post-exploitation activity.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-28T21:19:02Z","date_published":"2026-05-28T21:19:02Z","id":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-46840-ords/","summary":"CVE-2026-46840 is a critical vulnerability in Oracle REST Data Services (ORDS) that allows an unauthenticated attacker with network access to achieve complete takeover of the service, potentially impacting additional products due to scope change.","title":"CVE-2026-46840 - Oracle REST Data Services Takeover Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-46840-ords/"}],"language":"en","title":"CraftedSignal Threat Feed - Cve-2026-46840","version":"https://jsonfeed.org/version/1.1"}