{"id":"CVE-2026-87953","kind":"vulnerability","aliases":["CVE-2026-87953"],"related":[],"title":"Drupal SAML SSO Service Provider: server-side request forgery through versions 3.2.0","description":"Server-Side Request Forgery (SSRF) vulnerability in Drupal SAML SSO - Service Provider  allows Server Side Request Forgery. This issue affects SAML SSO - Service Provider  versions: from 0.0.0 to 3.2.0.","summary":"The Drupal SAML SSO - Service Provider module contains a server-side request forgery flaw affecting versions up to and including 3.2.0. An attacker can make the Drupal server send requests to internal or arbitrary URLs of the attacker's choosing.","severity":"low","cvss":3.3,"epss":0.00168,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["drupal","package","saml","self-hosted"],"not_affected_if":["module-not-installed","patched-version"],"how_to_check":"- Check the installed version of the `saml_sso` module (Drupal SAML SSO - Service Provider) with `drush pm:list --filter=saml` or `composer show drupal/saml_sso`\n- Look for the module in `composer.lock` and confirm whether it is at `3.2.0` or earlier","fix":"- Upgrade the Drupal SAML SSO - Service Provider module to a version later than `3.2.0`; the sources do not name the fixed version, so check the drupal.org project page\n- If no fixed release is available, disable the module until it is patched","status":"open","published_at":"2026-10-22T02:17:05+00:00","first_seen_at":"2026-10-23T21:57:30+00:00","triaged_at":"2026-10-25T04:45:54+00:00","updated_at":"2026-10-25T04:45:54+00:00","category":"package","confidence":0.5,"triage":{"at":"2026-10-25T04:45:54Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade the Drupal SAML SSO - Service Provider module to a version later than `3.2.0`; the sources do not name the fixed version, so check the drupal.org project page\n- If no fixed release is available, disable the module until it is patched","reach":"unknown","title":"Drupal SAML SSO Service Provider: server-side request forgery through versions 3.2.0","impact":"medium","summary":"The Drupal SAML SSO - Service Provider module contains a server-side request forgery flaw affecting versions up to and including 3.2.0. An attacker can make the Drupal server send requests to internal or arbitrary URLs of the attacker's choosing.","category":"package","nicknames":[],"who_cares":["drupal","saml","self-hosted"],"confidence":0.5,"needs_auth":"unknown","worst_case":"Server makes requests to internal services on attacker's behalf","analyst_note":"Confirm the fixed version and whether SSRF is reachable without authentication, using the NVD entry and the Drupal.org security advisory for saml_sso.","how_to_check":"- Check the installed version of the `saml_sso` module (Drupal SAML SSO - Service Provider) with `drush pm:list --filter=saml` or `composer show drupal/saml_sso`\n- Look for the module in `composer.lock` and confirm whether it is at `3.2.0` or earlier","needs_analyst":true,"not_affected_if":["module-not-installed","patched-version"],"who_is_affected":"Sites running the Drupal SAML SSO - Service Provider module at version 3.2.0 or earlier are affected. Sites that do not use this module, or run a later version, are not affected by this entry. The sources do not say which module features trigger the request path.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000653,"input_tokens":3357,"output_tokens":635,"severity_before":"low"},"analyst_status":null,"analyst_note":null,"search":"'-2026':15A,18A '-87953':16A,19A '0.0.0':94C '3.2.0':13A,47B,96C 'affect':41B,87C 'allow':80C 'arbitrari':60B 'attack':49B,64B 'choos':66B 'contain':33B 'cve':14A,17A 'drupal':1A,20B,27B,53B,75C 'flaw':40B 'forgeri':10A,39B,71C,84C 'host':25B 'includ':46B 'intern':58B 'issu':86C 'make':51B 'modul':32B 'packag':21B 'provid':5A,31B,79C,91C 'request':9A,38B,56B,70C,83C 'saml':2A,22B,28B,76C,88C 'self':24B 'self-host':23B 'send':55B 'server':7A,36B,54B,68C,81C 'server-sid':6A,35B,67C 'servic':4A,30B,78C,90C 'side':8A,37B,69C,82C 'sso':3A,29B,77C,89C 'ssrf':72C 'url':61B 'version':12A,42B,92C 'vulner':73C","nicknames":[],"mitigations":[],"who_affected":"Sites running the Drupal SAML SSO - Service Provider module at version 3.2.0 or earlier are affected. Sites that do not use this module, or run a later version, are not affected by this entry. The sources do not say which module features trigger the request path.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-22T02:17:05+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","cvss_by":"134c704f-9b21-4f2e-91b3-4a467353bcc0","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-87953","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87953","severity":null,"published_at":"2026-10-22T02:17:05+00:00","modified_at":"2026-10-22T16:54:17+00:00","first_seen_at":"2026-10-23T21:57:30+00:00","fetched_at":"2026-10-23T22:29:02+00:00","note":null},{"source":"epss","external_id":"CVE-2026-87953","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-87953","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-24T07:15:52+00:00","fetched_at":"2026-10-24T07:15:52+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"}