{"cve":"CVE-2026-78372","nvd":{"published":"2026-08-24T14:17:05.260","modified":"2026-10-14T13:10:00.187","status":"Deferred","description":"RansomLook does not consistently \nenforce authorization checks when accessing groups, markets, and ransom \nnotes marked as private. An unauthenticated or otherwise unauthorized \nremote attacker can access information associated with private entities \nthrough several web views and API endpoints.\n\n\nThe affected functionality can \ndisclose private group or market names, ransom-note content, and \nmetadata associated with private groups. The /compare\n functionality can also be queried directly with the name of a private \nentity, allowing an unauthorized user to retrieve information such as \npost counts, mirror totals, and uptime even when the entity is excluded \nfrom the normal user interface. The patch explicitly adds a privacy \ncheck before returning this information. \n\n\nRansom-note views, search results, \nand API endpoints were similarly missing consistent filtering. The fix \nintroduces normalized private-group identifiers and alias handling, then\n rejects or filters notes associated with private groups before \nreturning them to unauthorized callers.  \n\n\nAn attacker can exploit the issue \nremotely without authentication or user interaction, resulting in \ndisclosure of information that was explicitly intended to be restricted \nto authorized users.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","score":9.2},"cvss_v3":null,"cwes":["CWE-862"],"references":["https://github.com/RansomLook/RansomLook/commit/dc92d6d5c076bcdbf3476aca42daf0260e8d99d7"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:50:17.453294893+00:00"},"epss":{"cve":"CVE-2026-78372","score":0.00665,"percentile":0.51503,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}