{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/passgate-through-30042026/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":8.2,"id":"CVE-2026-4256"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["PassGate (through 30042026)"],"_cs_severities":["high"],"_cs_tags":["ldap-injection","vulnerability","web-application"],"_cs_type":"advisory","_cs_vendors":["PEAKUP Technology Inc."],"content_html":"\u003cp\u003eA significant vulnerability, CVE-2026-4256, has been identified in PEAKUP Technology Inc.'s PassGate software, affecting all versions up to and including those released on April 30, 2026. This vulnerability is classified as an 'LDAP Injection' flaw (CWE-90) and stems from improper neutralization of special elements within LDAP queries. An unauthenticated attacker can exploit this weakness to inject malicious syntax into user-controlled input, which the application then processes as part of an LDAP query. Successful exploitation can lead to unauthorized information disclosure, such as sensitive user data or credentials, and potentially limited manipulation of directory entries, posing a substantial risk to the confidentiality and integrity of systems relying on PassGate for authentication and authorization. The vulnerability carries a CVSS v3.1 base score of 8.2, indicating its high severity.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn unauthenticated attacker identifies a public-facing instance of PEAKUP PassGate.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious HTTP request containing specially designed input for a vulnerable application field.\u003c/li\u003e\n\u003cli\u003eThis input includes LDAP query metacharacters (e.g., \u003ccode\u003e*\u003c/code\u003e, \u003ccode\u003e(\u003c/code\u003e, \u003ccode\u003e)\u003c/code\u003e, \u003ccode\u003e=\u003c/code\u003e, \u003ccode\u003e\u0026amp;\u003c/code\u003e, \u003ccode\u003e|\u003c/code\u003e) intended to alter the original LDAP query logic.\u003c/li\u003e\n\u003cli\u003eThe PassGate application, due to improper input sanitization, fails to neutralize these special elements.\u003c/li\u003e\n\u003cli\u003eThe malicious input is directly concatenated into an LDAP query that the PassGate application sends to its underlying LDAP server.\u003c/li\u003e\n\u003cli\u003eThe LDAP server executes the modified query, which was not intended by the application developer.\u003c/li\u003e\n\u003cli\u003eThis execution could result in the retrieval of unauthorized directory information (e.g., user attributes, group memberships, credentials).\u003c/li\u003e\n\u003cli\u003eThe attacker gains access to sensitive data or modifies directory entries based on the results of the injected LDAP query.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eThe primary impact of CVE-2026-4256 is a high confidentiality breach, where an attacker can gain unauthorized access to sensitive information stored in the LDAP directory. This could include user credentials, personally identifiable information, or other critical business data, compromising system security and potentially leading to further network intrusions. While the integrity impact is rated as low, successful exploitation could still allow for limited modification of directory entries, which might disrupt services or facilitate privilege escalation. There is no specified impact on system availability, and the number of victims or targeted sectors has not been publicly disclosed, but any organization using affected PassGate versions is at risk.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eImmediately apply the security update provided by PEAKUP Technology Inc. that addresses \u003cstrong\u003eCVE-2026-4256\u003c/strong\u003e to all affected PassGate installations.\u003c/li\u003e\n\u003cli\u003eConfigure Web Application Firewalls (WAFs) to include rules specifically designed to detect and block common LDAP injection patterns, protecting endpoints exposed by the \u003cstrong\u003ePassGate\u003c/strong\u003e application.\u003c/li\u003e\n\u003cli\u003eImplement robust logging for \u003cstrong\u003ePassGate\u003c/strong\u003e and LDAP server interactions, and monitor these logs for unusual LDAP query structures, frequent authentication failures from single sources, or unexpected data retrieval volumes.\u003c/li\u003e\n\u003cli\u003eConduct regular security audits and penetration testing on \u003cstrong\u003ePassGate\u003c/strong\u003e deployments to identify and mitigate similar vulnerabilities.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-07-09T14:17:42Z","date_published":"2026-07-09T14:17:42Z","id":"https://feed.craftedsignal.io/briefs/2026-07-ldap-injection-passgate/","summary":"A high-severity LDAP injection vulnerability, CVE-2026-4256, exists in PEAKUP Technology Inc.'s PassGate product through version 30042026, allowing an unauthenticated attacker to manipulate LDAP queries, potentially leading to high confidentiality impact and low integrity impact.","title":"CVE-2026-4256 - PEAKUP PassGate LDAP Injection Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-07-ldap-injection-passgate/"}],"language":"en","title":"CraftedSignal Threat Feed - PassGate (Through 30042026)","version":"https://jsonfeed.org/version/1.1"}