{"id":"CVE-2026-49249","title":"Boruta is a standalone authorization server that aims to implement OAuth 2.0 and Openid Connect up to decentralized identity specifications","summary":"Boruta is a standalone authorization server that aims to implement OAuth 2.0 and Openid Connect up to decentralized identity specifications. Prior to version 0.10.0, BorutaIdentityWeb.UserSettingsController.update/2 atomizes every key of…","severity":"high","cvss":7.1,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","cwe":["CWE-400","CWE-770"],"vendor":"malach-it","product":"boruta-server","affected":["boruta-server < 0.10.0"],"published":"2026-09-02","updated":"2026-09-09","sourceUpdated":"2026-09-09T21:04:42.813","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-49249","references":[{"url":"https://github.com/malach-it/boruta-server/releases/tag/0.10.0","label":"security-advisories@github.com"},{"url":"https://github.com/malach-it/boruta-server/security/advisories/GHSA-q428-ch8m-94gg","label":"security-advisories@github.com"},{"url":"https://github.com/malach-it/boruta-server/security/advisories/GHSA-q428-ch8m-94gg","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-02T19:12:21.807756Z"},"cvssSource":"cna","ingestedAt":"2026-09-13T09:45:18.855Z","epss":0.00235,"epssPercentile":0.14641,"slug":"CVE-2026-49249","body":"## Overview\n\nBoruta is a standalone authorization server that aims to implement OAuth 2.0 and Openid Connect up to decentralized identity specifications. Prior to version 0.10.0, BorutaIdentityWeb.UserSettingsController.update/2 atomizes every key of the user-supplied request body via String.to_atom/1 before any validation. Because String.to_atom interns atoms permanently in the BEAM atom table (default cap 1,048,576 atoms; ERL_MAX_ATOMS), any authenticated end user can send PUT /users/settings with a user[<fresh-key>]=... body containing fresh keys per request and exhaust the global VM atom table. Once the table is full, the BEAM aborts with no more index entries in atom_tab and the entire OIDC server (auth, admin, gateway apps in the umbrella) crashes. The route is protected only by require_authenticated_user and a per-IP rate limit of 10 requests/second; a logged-in end user can hit it. The keys are atomized unconditionally before the downstream Accounts.update_user/6 call, so even failing updates contribute to exhaustion. This issue has been patched in version 0.10.0.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":51,"depthScoreParts":{"impact":39.1,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[]}