{"id":"CVE-2026-123541","kind":"vulnerability","aliases":["CVE-2026-123541"],"related":[],"title":"OpenAM: open redirect after SAML 1.x sign-on sends users to phishing sites","description":"OpenAM before 16.1.4 contains an open redirect vulnerability that allows remote attackers to redirect users after SAML 1.x single sign-on by exploiting loose trusted-partner destination matching. Attackers can craft links to /SAMLAwareServlet or /SAMLPOSTProfileServlet with a destination host resembling a trusted partner to send authenticated users to attacker-controlled phishing sites.","summary":"OpenAM before 16.1.4 matches trusted-partner destinations loosely during SAML 1.x single sign-on. An attacker can craft a link to /SAMLAwareServlet or /SAMLPOSTProfileServlet that sends a freshly authenticated user to an attacker-controlled phishing site.","severity":"medium","cvss":5.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["openam","other","saml","sso"],"not_affected_if":["no-saml-1x","openam-16.1.4-or-later"],"how_to_check":"- Check the OpenAM version in use; `16.1.4` or later is not affected per the description.\n- Look for SAML 1.x single sign-on configured with trusted partners in the OpenAM deployment.","fix":"- OpenAM: upgrade to `16.1.4` or later.","status":"open","published_at":"2026-11-08T02:16:44+00:00","first_seen_at":"2026-11-08T02:21:10+00:00","triaged_at":"2026-11-08T02:25:16+00:00","updated_at":"2026-11-08T02:25:16+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-11-08T02:25:16Z","model":"claude-haiku-5-5","output":{"fix":"- OpenAM: upgrade to `16.1.4` or later.","reach":"internet","title":"OpenAM: open redirect after SAML 1.x sign-on sends users to phishing sites","impact":"low","summary":"OpenAM before 16.1.4 matches trusted-partner destinations loosely during SAML 1.x single sign-on. An attacker can craft a link to /SAMLAwareServlet or /SAMLPOSTProfileServlet that sends a freshly authenticated user to an attacker-controlled phishing site.","audience":"businesses","category":"other","nicknames":[],"who_cares":["openam","saml","sso"],"confidence":0.7,"fix_status":"available","needs_auth":"no","worst_case":"Authenticated users are redirected to attacker-controlled phishing sites","analyst_note":"","how_to_check":"- Check the OpenAM version in use; `16.1.4` or later is not affected per the description.\n- Look for SAML 1.x single sign-on configured with trusted partners in the OpenAM deployment.\n- unknown for exact configuration checks, as the sources do not say.","plain_action":"","needs_analyst":false,"not_affected_if":["openam-16.1.4-or-later","no-saml-1x"],"who_is_affected":"OpenAM deployments before 16.1.4 that use SAML 1.x single sign-on are exposed, since the flaw sits in the SAML servlets and trusted-partner destination check. Teams on OpenAM 16.1.4 or later, or not using SAML 1.x, can skip it. Exposure of the exact default configuration is unknown.","user_interaction":"yes","needs_special_setup":"yes","severity_if_unknown":"medium"},"cost_usd":0.000727,"input_tokens":4307,"output_tokens":593,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-123541':18A,21A '-2026':17A,20A '/samlawareservlet':50B,102C '/samlpostprofileservlet':52B,104C '1':6A,37B,83C '16.1.4':28B,68C 'allow':75C 'attack':44B,62B,77C,97C,119C 'attacker-control':61B,118C 'authent':57B,115C 'contain':69C 'control':63B,120C 'craft':46B,99C 'cve':16A,19A 'destin':33B,95C,107C 'exploit':90C 'fresh':56B 'host':108C 'link':48B,100C 'loos':34B,91C 'match':29B,96C 'open':2A,71C 'openam':1A,22B,26B,66C 'partner':32B,94C,112C 'phish':14A,64B,121C 'redirect':3A,72C,79C 'remot':76C 'resembl':109C 'saml':5A,24B,36B,82C 'send':11A,54B,114C 'sign':9A,41B,87C 'sign-on':8A,40B,86C 'singl':39B,85C 'site':15A,65B,122C 'sso':25B 'trust':31B,93C,111C 'trusted-partn':30B,92C 'user':12A,58B,80C,116C 'vulner':73C 'x':7A,38B,84C","nicknames":[],"mitigations":[],"who_affected":"OpenAM deployments before 16.1.4 that use SAML 1.x single sign-on are exposed, since the flaw sits in the SAML servlets and trusted-partner destination check. Teams on OpenAM 16.1.4 or later, or not using SAML 1.x, can skip it. Exposure of the exact default configuration is unknown.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["medium","openam","other","saml","sso"],"campaign_type":null,"search_a":"'-123541':18A,21A '-2026':17A,20A '1':6A 'cve':16A,19A 'open':2A 'openam':1A 'phish':14A 'redirect':3A 'saml':5A 'send':11A 'sign':9A 'sign-on':8A 'site':15A 'user':12A 'x':7A","search_b":"'/samlawareservlet':50B '/samlpostprofileservlet':52B '1':37B '16.1.4':28B 'attack':44B,62B 'attacker-control':61B 'authent':57B 'control':63B 'craft':46B 'destin':33B 'fresh':56B 'link':48B 'loos':34B 'match':29B 'openam':22B,26B 'partner':32B 'phish':64B 'saml':24B,36B 'send':54B 'sign':41B 'sign-on':40B 'singl':39B 'site':65B 'sso':25B 'trust':31B 'trusted-partn':30B 'user':58B 'x':38B","search_c":"'/samlawareservlet':102C '/samlpostprofileservlet':104C '1':83C '16.1.4':68C 'allow':75C 'attack':77C,97C,119C 'attacker-control':118C 'authent':115C 'contain':69C 'control':120C 'craft':99C 'destin':95C,107C 'exploit':90C 'host':108C 'link':100C 'loos':91C 'match':96C 'open':71C 'openam':66C 'partner':94C,112C 'phish':121C 'redirect':72C,79C 'remot':76C 'resembl':109C 'saml':82C 'send':114C 'sign':87C 'sign-on':86C 'singl':85C 'site':122C 'trust':93C,111C 'trusted-partn':92C 'user':80C,116C 'vulner':73C 'x':84C","first_public_at":"2026-10-22T09:25:42+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-123541","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123541","severity":null,"published_at":"2026-11-08T02:16:44+00:00","modified_at":"2026-11-08T02:16:44+00:00","first_seen_at":"2026-11-08T02:21:10+00:00","fetched_at":"2026-11-08T02:21:10+00:00","note":null}],"documents":[{"id":99231,"url":"https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-rw43-r238-4c7j","title":"Vendor advisory: github.com","kind":"vendor","source":"nvd","publisher":"vendor","text":null,"published_at":"2026-10-22T09:25:42+00:00","relation":"advisory","confidence":null,"note":"Vendor advisory: github.com"},{"id":99232,"url":"https://www.vulncheck.com/advisories/openam-before-16.1.4-open-redirect-via-saml-1-x-trusted-partner-matching","title":"Third-party advisory: www.vulncheck.com","kind":"advisory","source":"nvd","publisher":"research","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":"Third-party advisory: www.vulncheck.com"}],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}