{"cve":{"cve_id":"CVE-2026-80428","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.02332,"epss_percentile":0.8263,"epss_as_of":"2026-09-15","description":"ILIAS before versions 9.22, 10.10, and 11.3 contains an unauthenticated PHP object injection vulnerability that allows unauthenticated attackers to execute arbitrary code by injecting serialized objects through the LTI authentication endpoint and triggering deserialization via the Shibboleth back-channel logout endpoint. Attackers can write arbitrary serialized objects into session storage, then exploit an available POP gadget through the logout endpoint's unrestricted deserialization to write attacker-controlled PHP content to a web-accessible path and achieve remote code execution as the web server user.","published_at":"2026-08-26T15:44:55.917000Z","last_modified_at":"2026-09-10T20:48:45.067000Z","cvss_v3_score":9.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"CRITICAL","cvss_v4_score":9.3,"cvss_v4_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","cvss_v4_severity":"CRITICAL","ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":true,"ssvc_technical_impact":"total","cwes":["CWE-502"],"nvd_references":["https://docu.ilias.de/ilias.php?baseClass=ilrepositorygui&cmdNode=wy:ll:6t&cmdClass=ilBlogPostingGUI&cmd=previewFullscreen&ref_id=15821&blpg=936","https://docu.ilias.de/ilias.php?baseClass=illmpresentationgui&obj_id=225632&ref_id=35","https://docu.ilias.de/ilias.php?baseClass=ilrepositorygui&cmdNode=wy:ll:6t&cmdClass=ilBlogPostingGUI&cmd=previewFullscreen&ref_id=15821&blpg=935","https://docu.ilias.de/ilias.php?baseClass=illmpresentationgui&obj_id=225631&ref_id=35","https://docu.ilias.de/ilias.php?baseClass=ilrepositorygui&cmdNode=wy:ll:6t&cmdClass=ilBlogPostingGUI&cmd=previewFullscreen&ref_id=15821&blpg=934","https://docu.ilias.de/ilias.php?baseClass=illmpresentationgui&obj_id=225630&ref_id=35"],"vuln_status":"Awaiting Analysis","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-08-26T17:39:11.366056Z","updated_at":"2026-09-11T23:39:39.689094Z"},"effective_severity":"CRITICAL","badges":["exploit"],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"AT","name":"Attack Requirements","value":"N","value_label":"None"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"H","value_label":"High"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"N","value_label":"None"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"N","value_label":"None"},{"metric":"SA","name":"Availability (Subsequent System)","value":"N","value_label":"None"}]},"affected":[{"vendor_slug":"ilias-elearning-e.v.","vendor_name":"ILIAS-eLearning e.V.","product_slug":"ilias","product_name":"ILIAS","version_start":"0","version_start_inclusive":true,"version_end":"9.22","version_end_inclusive":false,"cpe23_uri":"cve5:ilias-elearning-e.v.:ilias:0:9.22"},{"vendor_slug":"ilias-elearning-e.v.","vendor_name":"ILIAS-eLearning e.V.","product_slug":"ilias","product_name":"ILIAS","version_start":"10.0","version_start_inclusive":true,"version_end":"10.10","version_end_inclusive":false,"cpe23_uri":"cve5:ilias-elearning-e.v.:ilias:10.0:10.10"},{"vendor_slug":"ilias-elearning-e.v.","vendor_name":"ILIAS-eLearning e.V.","product_slug":"ilias","product_name":"ILIAS","version_start":"11.0","version_start_inclusive":true,"version_end":"11.3","version_end_inclusive":false,"cpe23_uri":"cve5:ilias-elearning-e.v.:ilias:11.0:11.3"},{"vendor_slug":"ilias-elearning-e.v.","vendor_name":"ILIAS-eLearning e.V.","product_slug":"ilias","product_name":"ILIAS","version_start":"9.0","version_start_inclusive":true,"version_end":"9.22","version_end_inclusive":false,"cpe23_uri":"cve5:ilias-elearning-e.v.:ilias:9.0:9.22"}],"exploit_refs":[{"source":"exploit-db","kind":"exploit-db","url":"https://www.exploit-db.com/exploits/52682","title":"CVE-2026-80428 Unauthenticated PHP Object Injection via Shibboleth - ILIAS < 9.22_ 10.0 < 10.10_ 11.0 < 11.3 - RCE","author":"DigiProSec","disclosed_at":"2026-09-11"}],"news":[],"references":[{"url":"https://docu.ilias.de/ilias.php?baseClass=ilrepositorygui&cmdNode=wy:ll:6t&cmdClass=ilBlogPostingGUI&cmd=previewFullscreen&ref_id=15821&blpg=936","source_type":"MISC","tags":[]},{"url":"https://docu.ilias.de/ilias.php?baseClass=illmpresentationgui&obj_id=225632&ref_id=35","source_type":"MISC","tags":[]},{"url":"https://docu.ilias.de/ilias.php?baseClass=ilrepositorygui&cmdNode=wy:ll:6t&cmdClass=ilBlogPostingGUI&cmd=previewFullscreen&ref_id=15821&blpg=935","source_type":"MISC","tags":[]},{"url":"https://docu.ilias.de/ilias.php?baseClass=illmpresentationgui&obj_id=225631&ref_id=35","source_type":"MISC","tags":[]},{"url":"https://docu.ilias.de/ilias.php?baseClass=ilrepositorygui&cmdNode=wy:ll:6t&cmdClass=ilBlogPostingGUI&cmd=previewFullscreen&ref_id=15821&blpg=934","source_type":"MISC","tags":[]},{"url":"https://docu.ilias.de/ilias.php?baseClass=illmpresentationgui&obj_id=225630&ref_id=35","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-08-26T15:44:55.917000Z","label":"CVE published","source":null},{"type":"ssvc_changed","at":"2026-08-29T03:49:55.166801Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-08-29T03:49:55.166801Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-08-29T03:49:55.166801Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"exploit_known","at":"2026-09-11T00:00:00Z","label":"Public exploit available","source":"exploit-db"}]}