{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-25856: OpenBullet2 0.3.2 Authenticated RCE via Job Configuration Interface","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-25856","status":"final","version":"1","initial_release_date":"2026-06-08T16:50:42.870Z","current_release_date":"2026-06-08T18:48:33.862Z","revision_history":[{"date":"2026-06-08T16:50:42.870Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"OpenBullet2 through version 0.3.2 contains an authenticated remote code execution vulnerability that allows authenticated users to execute arbitrary C# code on the server host by creating or modifying job configurations. Attackers can leverage the plain C# execution mode, which lacks reference filtering or API restrictions, to access the file system, spawn processes, and invoke arbitrary .NET APIs as the process user.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-25856 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-25856"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-25856"},{"category":"external","summary":"hackernoon.com","url":"https://hackernoon.com/one-empty-header-to-admin-how-an-auth-bypass-breaks-openbullet2"},{"category":"external","summary":"vulncheck.com","url":"https://www.vulncheck.com/advisories/openbullet2-authenticated-rce-via-job-configuration-interface"}]},"product_tree":{"branches":[{"category":"vendor","name":"openbullet","branches":[{"category":"product_name","name":"openbullet2","branches":[{"category":"product_version_range","name":"<=0.3.2","product":{"name":"openbullet openbullet2 <=0.3.2","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:openbullet:openbullet2:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-25856","title":"OpenBullet2 0.3.2 Authenticated RCE via Job Configuration Interface","notes":[{"category":"description","text":"OpenBullet2 through version 0.3.2 contains an authenticated remote code execution vulnerability that allows authenticated users to execute arbitrary C# code on the server host by creating or modifying job configurations. Attackers can leverage the plain C# execution mode, which lacks reference filtering or API restrictions, to access the file system, spawn processes, and invoke arbitrary .NET APIs as the process user.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v4":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","baseScore":8.7,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1"]}]}]}