{"id":"CVE-2026-44793","kind":"vulnerability","aliases":["CVE-2026-44793","GHSA-fhrq-3gmx-p879"],"related":[],"title":"OpenAM SAML2 Cluster Cookie-Hash-Redirect Path has Pre-authentication Reflected XSS via `FSUtils.postToTarget`","description":"Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, certain federation endpoints in a non-default clustered configuration inconsistently encode user-supplied parameters rendered into HTML in the SAML2 cluster cookie-hash redirect path. An unauthenticated attacker can induce a user to follow a crafted request and execute script in the OpenAM origin. This issue is fixed in version 16.1.1.","summary":"The OpenAM federation library renders some user-supplied parameters into HTML responses without consistent output encoding on certain federation endpoints. In a non-default clustered SAML2 setup, an attacker can inject script into the OpenAM origin without logging in.","severity":"high","cvss":7.0,"epss":0.00593,"exploited":false,"exploited_at":null,"products":[{"name":"org.openidentityplatform.openam:openam-federation-library","fixed":["16.1.1"],"affected":"< 16.1.1","ecosystem":"maven"}],"ecosystems":["maven"],"tags":["cwe-79","java","maven","openam","package","saml2","self-hosted"],"not_affected_if":["default-config","single-node"],"how_to_check":"- Check the version of `org.openidentityplatform.openam:openam-federation-library` in your Maven dependency tree (`mvn dependency:tree | grep openam-federation-library`).\n- Confirm whether SAML2 cluster cookie-hash redirect is enabled in your OpenAM configuration; the sources do not name the exact setting.","fix":"- Upgrade `openam-federation-library` to `16.1.1` or later.","status":"open","published_at":"2026-06-22T20:39:06+00:00","first_seen_at":"2026-10-28T15:29:41+00:00","triaged_at":"2026-10-28T15:31:00+00:00","updated_at":"2026-10-28T15:33:37+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-10-28T15:31:00Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade `openam-federation-library` to `16.1.1` or later.","reach":"internet","title":"OpenAM federation library: unauthenticated reflected XSS in SAML2 cluster redirect","impact":"medium","summary":"The OpenAM federation library renders some user-supplied parameters into HTML responses without consistent output encoding on certain federation endpoints. In a non-default clustered SAML2 setup, an attacker can inject script into the OpenAM origin without logging in.","category":"package","nicknames":[],"who_cares":["openam","saml2","java","maven","self-hosted"],"confidence":0.6,"needs_auth":"no","worst_case":"Attacker runs script in victim's OpenAM session via crafted link","analyst_note":"","how_to_check":"- Check the version of `org.openidentityplatform.openam:openam-federation-library` in your Maven dependency tree (`mvn dependency:tree | grep openam-federation-library`).\n- Confirm whether SAML2 cluster cookie-hash redirect is enabled in your OpenAM configuration; the sources do not name the exact setting.","needs_analyst":false,"not_affected_if":["default-config","single-node"],"who_is_affected":"Deployments running OpenAM with the federation library below `16.1.1` that use the SAML2 cluster cookie-hash redirect path, which the advisory describes as a non-default configuration used in some clustered deployments. Single-node or non-clustered installs without that configuration are less likely to be exposed; the sources do not say more precisely.","user_interaction":"yes","needs_special_setup":"yes","severity_if_unknown":"low"},"cost_usd":0.000623,"input_tokens":3391,"output_tokens":568,"severity_before":"low"},"analyst_status":null,"analyst_note":null,"search":"'-2026':18A,26A '-44793':19A,27A '-79':34B '16.1.1':94C,148C '3gmx':23A 'access':84C,89C 'attack':73B,125C 'authent':12A 'certain':61B,95C 'cluster':3A,69B,103C,117C 'configur':104C 'consist':57B 'cooki':5A,119C 'cookie-hash':118C 'cookie-hash-redirect':4A 'craft':133C 'cve':17A,25A 'cwe':33B 'default':68B,102C 'encod':59B,106C 'endpoint':63B,97C 'execut':136C 'feder':45B,62B,96C 'federation':31A 'fhrq':22A 'fix':145C 'follow':131C 'fsutils.posttotarget':16A 'ghsa':21A 'ghsa-fhrq-3gmx-p879':20A 'hash':6A,120C 'host':42B 'html':54B,113C 'inconsist':105C 'induc':127C 'inject':75B 'issu':143C 'java':35B 'librari':46B 'library':32A 'log':82B 'manag':85C,90C 'maven':36B 'non':67B,101C 'non-default':66B,100C 'open':83C 'openam':1A,30A,37B,44B,79B,86C,140C 'openam-federation-library':29A 'org.openidentityplatform.openam':28A 'origin':80B,141C 'output':58B 'p879':24A 'packag':38B 'paramet':52B,110C 'path':8A,122C 'pre':11A 'pre-authent':10A 'prior':92C 'redirect':7A,121C 'reflect':13A 'render':47B,111C 'request':134C 'respons':55B 'saml2':2A,39B,70B,116C 'script':76B,137C 'self':41B 'self-host':40B 'setup':71B 'solut':91C 'suppli':51B,109C 'unauthent':124C 'user':50B,108C,129C 'user-suppli':49B,107C 'version':147C 'via':15A 'without':56B,81B 'xss':14A","nicknames":[],"mitigations":[],"who_affected":"Deployments running OpenAM with the federation library below `16.1.1` that use the SAML2 cluster cookie-hash redirect path, which the advisory describes as a non-default configuration used in some clustered deployments. Single-node or non-clustered installs without that configuration are less likely to be exposed; the sources do not say more precisely.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-06-22T20:39:06+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:H/VA:N/SC:L/SI:H/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":"security-advisories@github.com","poc_count":0,"sources":[{"source":"ghsa","external_id":"GHSA-fhrq-3gmx-p879","url":"https://github.com/advisories/GHSA-fhrq-3gmx-p879","severity":"low","published_at":"2026-06-22T20:39:06+00:00","modified_at":"2026-10-28T15:27:54+00:00","first_seen_at":"2026-10-28T15:29:41+00:00","fetched_at":"2026-10-28T15:29:41+00:00","note":null},{"source":"nvd","external_id":"CVE-2026-44793","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44793","severity":null,"published_at":"2026-09-15T10:17:03+00:00","modified_at":"2026-09-23T18:21:42+00:00","first_seen_at":"2026-10-28T15:33:37+00:00","fetched_at":"2026-10-28T15:33:37+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}