{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/data-disclosure/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[],"_cs_exploited":false,"_cs_products":["Traefik"],"_cs_severities":["high"],"_cs_tags":["vulnerability","data-disclosure","traefik"],"_cs_type":"advisory","_cs_vendors":["Traefik"],"content_html":"\u003cp\u003eA data confidentiality vulnerability has been discovered in Traefik, an open-source edge router. This vulnerability impacts Traefik versions v2.11.x prior to v2.11.44, v3.6.x prior to v3.6.15, and v3.7.0-rc.x prior to v3.7.0-rc.3. An attacker could exploit this flaw to potentially gain unauthorized access to sensitive information handled by the Traefik instance. This could include configuration details, credentials, or other data being routed through the system, depending on how Traefik is deployed and configured. The vulnerability was disclosed in Traefik security advisory GHSA-p6hg-qh38-555r on May 4, 2026. Successful exploitation could lead to a significant breach of data confidentiality.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker identifies a vulnerable Traefik instance running a susceptible version (v2.11.x \u0026lt; v2.11.44, v3.6.x \u0026lt; v3.6.15, or v3.7.0-rc.x \u0026lt; v3.7.0-rc.3).\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious HTTP request or series of requests.\u003c/li\u003e\n\u003cli\u003eThese crafted requests exploit the vulnerability to bypass access controls or other security mechanisms within Traefik.\u003c/li\u003e\n\u003cli\u003eThe vulnerability allows the attacker to access sensitive data such as configuration files, API keys, or other secrets managed by Traefik.\u003c/li\u003e\n\u003cli\u003eThe attacker uses these credentials to access internal resources.\u003c/li\u003e\n\u003cli\u003eThe attacker exfiltrates the exposed sensitive data.\u003c/li\u003e\n\u003cli\u003eThe attacker pivots to other internal systems.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this vulnerability could lead to the unauthorized disclosure of sensitive data handled by the Traefik instance. This could include configuration details, credentials, or other information being routed through the system. The impact will vary depending on the specific configuration of Traefik and the nature of the data being processed. However, a successful attack could result in significant damage, including data breaches, loss of intellectual property, and reputational damage.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade Traefik instances to the latest versions (\u0026gt;= v2.11.44, \u0026gt;= v3.6.15, \u0026gt;= v3.7.0-rc.3) to patch the vulnerability as detailed in the Traefik security advisory GHSA-p6hg-qh38-555r.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious activity indicative of exploitation attempts, focusing on unusual request patterns or access to sensitive endpoints.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rules provided below to detect potential exploitation attempts in your environment.\u003c/li\u003e\n\u003cli\u003eReview and restrict access control policies in Traefik to minimize the potential impact of a successful exploitation.\u003c/li\u003e\n\u003cli\u003eInvestigate and validate any alerts generated by the Sigma rules to identify potentially compromised systems.\u003c/li\u003e\n\u003cli\u003ePatch CVE-2026-41181 on all internet-facing Traefik servers immediately.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-05T00:00:00Z","date_published":"2026-05-05T00:00:00Z","id":"/briefs/2026-05-traefik-disclosure/","summary":"A vulnerability in Traefik allows an attacker to compromise the confidentiality of data, affecting versions v2.11.x prior to v2.11.44, v3.6.x prior to v3.6.15, and v3.7.0-rc.x prior to v3.7.0-rc.3.","title":"Traefik Data Confidentiality Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-05-traefik-disclosure/"}],"language":"en","title":"CraftedSignal Threat Feed — Data-Disclosure","version":"https://jsonfeed.org/version/1.1"}