{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-77998 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-77998 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-77998 is a critical authentication bypass vulnerability in miniorange.com SAML SP Single Sign On – Login with ADFS extension for Joomla, published on 25 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-77998 and fix it if it is affected.\n\nWhat it is: CVE-2026-77998 is a critical authentication bypass vulnerability in miniorange.com SAML SP Single Sign On – Login with ADFS extension for Joomla, published on 25 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-77998 in the wild and no public exploit code.\n\nAffected product: miniorange.com SAML SP Single Sign On – Login with ADFS extension for Joomla. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-77998/ (Markdown: https://insights.sbomify.com/CVE-2026-77998/index.md)","id":"CVE-2026-77998","markdown":"https://insights.sbomify.com/CVE-2026-77998/index.md","name":"CVE-2026-77998","record":{"aliases":["GHSA-mp5v-46h8-gw29"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["account_takeover","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"Joomla SAML SSO plugin","requires_auth":"none","summary":"Unauthenticated attackers can bypass SAML signature verification to log in as any user, including administrators, due to a flawed boolean check on OpenSSL errors.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Joomla","cpe":[],"cvss":{"score":10,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0"},"cwes":[{"id":"CWE-639","name":"Authorization Bypass Through User-Controlled Key"}],"description":"Joomla Extension - miniorange.com - Unauthenticated Authentication Bypass via SAMLResponse Parameter in miniOrange SAML SSO \u003c 11.0.2, SAML SP Single Sign On – Login with ADFS \u003c 6.4,  SAML SP Single Sign On – SAML SSO login with Google Apps \u003c 6.4 - This is due to the mo_saml_validate_signature() function performing a loose boolean check on the raw tri-state integer returned by PHP's openssl_verify(), causing an error return value of -1 to be evaluated as truthy and therefore treated as a successful signature verification. This makes it possible for unauthenticated attackers to log in as any existing Joomla user, including administrators, by submitting a crafted SAMLResponse containing an attacker-controlled NameID and a deliberately malformed signature value that triggers an OpenSSL processing error — bypassing verification entirely and resulting in wp_set_auth_cookie() being called for the targeted account.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Auth bypass in SAML SP Single Sign On – Login with ADFS extension for Joomla","id":"CVE-2026-77998","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Business logic in J2Store extension for Joomla","id":"CVE-2026-77999"},"packages":[],"prev":{"headline":"Missing authorization in YOOtheme Pro extension for Joomla","id":"CVE-2026-77997"},"products":["SAML SP Single Sign On – Login with ADFS extension for Joomla","SAML SSO Basic for Joomla extension for Joomla","SAML SSO Enterprise for Joomla extension for Joomla","SAML SSO Free for Joomla extension for Joomla","SAML SSO Premium for Joomla extension for Joomla","SAML SSO Standard for Joomla extension for Joomla","SAML SSO login with Google Apps extension for Joomla"],"published":"2026-08-25","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-08","vendors":["miniorange.com"]},"summary":"Unauthenticated attackers can bypass SAML signature verification to log in as any user, including administrators, due to a flawed boolean check on OpenSSL errors.","url":"https://insights.sbomify.com/CVE-2026-77998/"}