{"id":"CVE-2026-91555","kind":"vulnerability","aliases":["CVE-2026-91555"],"related":[],"title":"Oracle BI Publisher: web server flaw allows unauthenticated data read and change","description":"Vulnerability in the Oracle BI Publisher product of Oracle Analytics (component: Web Server).  Supported versions that are affected are 8.2.0.0.0, 12.2.1.4.0 and  26.01.0.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle BI Publisher.  Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle BI Publisher, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of Oracle BI Publisher accessible data as well as  unauthorized read access to a subset of Oracle BI Publisher accessible data. CVSS 3.1 Base Score 6.1 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).","summary":"Oracle BI Publisher's web server component has a flaw that lets an unauthenticated attacker over HTTP read and modify some data the product can access. Successful exploitation needs a person other than the attacker to interact, and the impact can extend to other products (scope change).","severity":"medium","cvss":6.1,"epss":0.00238,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["oracle-analytics","oracle-bi-publisher","self-hosted","vendor"],"not_affected_if":["unaffected-version"],"how_to_check":"- Identify whether Oracle BI Publisher is deployed, and which version: `8.2.0.0.0`, `12.2.1.4.0` or `26.01.0.0.0` are the affected versions listed.\n- Check the Oracle Critical Patch Update advisory for your version to confirm the patch status: unknown from the sources.","fix":"- Apply the Oracle Critical Patch Update for Oracle Analytics / BI Publisher to your affected version: unknown from the sources, specific patch number not given.","status":"open","published_at":"2026-10-20T22:20:58+00:00","first_seen_at":"2026-10-23T21:57:27+00:00","triaged_at":"2026-10-25T04:03:33+00:00","updated_at":"2026-10-25T12:38:51+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-25T04:03:33Z","model":"claude-haiku-5-5","output":{"fix":"- Apply the Oracle Critical Patch Update for Oracle Analytics / BI Publisher to your affected version: unknown from the sources, specific patch number not given.","reach":"internet","title":"Oracle BI Publisher: web server flaw allows unauthenticated data read and change","impact":"medium","summary":"Oracle BI Publisher's web server component has a flaw that lets an unauthenticated attacker over HTTP read and modify some data the product can access. Successful exploitation needs a person other than the attacker to interact, and the impact can extend to other products (scope change).","category":"vendor","nicknames":[],"who_cares":["oracle-bi-publisher","oracle-analytics","self-hosted"],"confidence":0.6,"needs_auth":"no","worst_case":"Attacker reads and modifies some BI Publisher data, possibly affecting other products.","analyst_note":"Confirm patch identifiers and the Oracle advisory link for affected versions 8.2.0.0.0, 12.2.1.4.0 and 26.01.0.0.0; sources give no fix or check details.","how_to_check":"- Identify whether Oracle BI Publisher is deployed, and which version: `8.2.0.0.0`, `12.2.1.4.0` or `26.01.0.0.0` are the affected versions listed.\n- Check the Oracle Critical Patch Update advisory for your version to confirm the patch status: unknown from the sources.","needs_analyst":true,"not_affected_if":["unaffected-version"],"who_is_affected":"Deployments of Oracle BI Publisher (part of Oracle Analytics) on the affected versions that are reachable over HTTP from the network. Sources do not describe configuration details that would reduce exposure, so teams not running the listed versions can likely skip it.","user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000682,"input_tokens":3569,"output_tokens":651,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':14A,17A '-91555':15A,18A '/av':195C '12.2.1.4.0':97C '26.01.0.0.0':99C '3.1':183C,194C '6.1':186C '8.2.0.0.0':96C 'access':55B,108C,158C,165C,172C,180C 'addit':141C 'affect':94C 'allow':7A,103C 'analyt':21B,86C 'attack':44B,64B,105C,117C,127C,137C,146C 'base':184C 'bi':2A,24B,31B,81C,114C,135C,163C,178C 'c/c':200C 'chang':12A,76B,144C 'compon':36B,87C 'compromis':112C 'confidenti':187C 'cve':13A,16A 'cvss':182C,191C,193C 'data':9A,51B,166C,181C 'delet':157C 'easili':100C 'exploit':57B,101C 'extend':71B 'flaw':6A,39B 'host':28B 'http':46B,110C 'human':119C 'impact':69B,140C,190C 'insert':155C 'integr':189C 'interact':66B,120C 'l/a':202C 'l/i':201C 'l/pr':197C 'let':41B 'may':138C 'modifi':49B 'n':203C 'n/ac':196C 'n/ui':198C 'need':58B 'network':107C 'oracl':1A,20B,23B,30B,80C,85C,113C,134C,162C,177C 'oracle-analyt':19B 'oracle-bi-publish':22B 'person':60B,123C 'product':53B,74B,83C,142C 'publish':3A,25B,32B,82C,115C,136C,164C,179C 'r/s':199C 'read':10A,47B,171C 'requir':118C 'result':151C 'scope':75B,143C 'score':185C 'self':27B 'self-host':26B 'server':5A,35B,89C 'signific':139C 'subset':175C 'success':56B,116C,145C 'support':90C 'unauthent':8A,43B,104C 'unauthor':153C,170C 'updat':154C 'vector':192C 'vendor':29B 'version':91C 'via':109C 'vulner':77C,102C,131C,149C 'web':4A,34B,88C 'well':168C","nicknames":[],"mitigations":[],"who_affected":"Deployments of Oracle BI Publisher (part of Oracle Analytics) on the affected versions that are reachable over HTTP from the network. Sources do not describe configuration details that would reduce exposure, so teams not running the listed versions can likely skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:20:58+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-91555","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91555","severity":null,"published_at":"2026-10-20T22:20:58+00:00","modified_at":"2026-10-21T18:44:55+00:00","first_seen_at":"2026-10-23T21:57:27+00:00","fetched_at":"2026-10-23T22:29:01+00:00","note":null},{"source":"epss","external_id":"CVE-2026-91555","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-91555","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-25T12:38:51+00:00","fetched_at":"2026-10-25T12:38:51+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"}