{"id":"CVE-2026-117625","kind":"vulnerability","aliases":["CVE-2026-117625"],"related":[],"title":"Jenkins: missing permission check leaks HTTP proxy configuration details","description":"A missing permission check in Jenkins 2.587 and earlier, LTS 2.580.1 and earlier allows attackers with Overall/Read permission to obtain the server, port, user name, and no-proxy host list of the configured HTTP proxy.","summary":"Jenkins 2.587 and earlier, and LTS 2.580.1 and earlier, fail to check permissions on a path that exposes the configured HTTP proxy. A user with Overall/Read permission can read the proxy server, port, user name and no-proxy host list.","severity":"low","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["jenkins","runtime","self-hosted"],"not_affected_if":["no-http-proxy-configured","overall-read-restricted"],"how_to_check":"- Run `java -jar jenkins.war --version` or check the version shown under Manage Jenkins to see whether the instance is at or below `2.587` (weekly) or `2.580.1` (LTS)\n- Check whether an HTTP proxy is configured under Manage Jenkins > System > HTTP Proxy Configuration","fix":"- Upgrade Jenkins weekly to a release newer than `2.587`, or LTS to a release newer than `2.580.1`; the exact fixed version is unknown from the sources","status":"open","published_at":"2026-10-28T17:18:21+00:00","first_seen_at":"2026-10-28T17:34:09+00:00","triaged_at":"2026-10-28T17:34:47+00:00","updated_at":"2026-10-28T17:34:47+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-10-28T17:34:47Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade Jenkins weekly to a release newer than `2.587`, or LTS to a release newer than `2.580.1`; the exact fixed version is unknown from the sources","reach":"network","title":"Jenkins: missing permission check leaks HTTP proxy configuration details","impact":"low","summary":"Jenkins 2.587 and earlier, and LTS 2.580.1 and earlier, fail to check permissions on a path that exposes the configured HTTP proxy. A user with Overall/Read permission can read the proxy server, port, user name and no-proxy host list.","category":"runtime","nicknames":[],"who_cares":["jenkins","self-hosted"],"confidence":0.6,"needs_auth":"yes","worst_case":"Attacker reads proxy host, port and user name","analyst_note":"Confirm the affected endpoint and fixed versions from the NVD entry and the Jenkins security advisory.","how_to_check":"- Run `java -jar jenkins.war --version` or check the version shown under Manage Jenkins to see whether the instance is at or below `2.587` (weekly) or `2.580.1` (LTS)\n- Check whether an HTTP proxy is configured under Manage Jenkins > System > HTTP Proxy Configuration","needs_analyst":true,"not_affected_if":["no-http-proxy-configured","overall-read-restricted"],"who_is_affected":"Jenkins instances that have an HTTP proxy configured and grant Overall/Read to users who should not see proxy settings. Instances without a configured proxy, or where Overall/Read is limited to trusted users, have little to lose. The sources do not name the specific endpoint.","user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"low"},"cost_usd":0.000634,"input_tokens":3303,"output_tokens":607,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-117625':12A,15A '-2026':11A,14A '2.580.1':27B,72C '2.587':22B,68C 'allow':75C 'attack':76C 'check':4A,32B,65C 'configur':8A,40B,95C 'cve':10A,13A 'detail':9A 'earlier':24B,29B,70C,74C 'expos':38B 'fail':30B 'host':20B,60B,91C 'http':6A,41B,96C 'jenkin':1A,16B,21B,67C 'leak':5A 'list':61B,92C 'lts':26B,71C 'miss':2A,63C 'name':55B,86C 'no-proxi':57B,88C 'obtain':81C 'overall/read':46B,78C 'path':36B 'permiss':3A,33B,47B,64C,79C 'port':53B,84C 'proxi':7A,42B,51B,59B,90C,97C 'read':49B 'runtim':17B 'self':19B 'self-host':18B 'server':52B,83C 'user':44B,54B,85C","nicknames":[],"mitigations":[],"who_affected":"Jenkins instances that have an HTTP proxy configured and grant Overall/Read to users who should not see proxy settings. Instances without a configured proxy, or where Overall/Read is limited to trusted users, have little to lose. The sources do not name the specific endpoint.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-28T17:18:21+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-117625","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-117625","severity":null,"published_at":"2026-10-28T17:18:21+00:00","modified_at":"2026-10-28T17:18:21+00:00","first_seen_at":"2026-10-28T17:34:09+00:00","fetched_at":"2026-10-28T17:34:09+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"}