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{"bugzilla": {"description": "jack: jack: Information disclosure via unredacted error responses", "id": "2564322", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2564322"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-209", "details": ["jack lets users share media libraries through their Radarr/Sonarr stack, peer-to-peer. Prior to 0.1.0, `middleware/handle-error.ts` serializes raw `FetchError` objects into HTTP responses. `lib/servers/base.ts` attaches outbound request headers on upstream non-success responses and schema-validation failures; the public `extras` field in `lib/errors/FetchError.ts` remains enumerable and is emitted by JSON serialization. These headers include the internal Radarr/Sonarr `X-Api-Key` and custom connector headers such as `CF-Access-Client-Secret`. `lib/redact.ts` redacts logs and spans but not this response path. Any client with the shared peer API key, plus Cloudflare Access credentials if required by the deployment, can force an error without a race or user interaction. `GET /peer/items/:id` and `GET /servers/health` can expose the internal media-server key, while `GET /torznab/download/:id` can expose another peer's key and Cloudflare Access secrets. The /peer/search and /items routes catch these errors and are not affected. Disclosed internal keys grant full administrative control of the corresponding Radarr/Sonarr instance, crossing the intended boundary between friends' shared peer access and private backend credentials. This issue is fixed in version 0.1.0.", "A flaw was found in jack. The application serializes internal error objects directly into HTTP error responses without redacting outbound request headers. An authenticated remote user can trigger an error on specific endpoints to cause the disclosure of sensitive credentials, including internal API (Application Programming Interface) keys and backend access tokens. This information disclosure can allow an attacker to gain administrative control over linked media server instances."], "name": "CVE-2026-62979", "public_date": "2026-10-30T20:55:56Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-62979\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-62979\nhttps://github.com/roziscoding/jack/commit/2b296b5137acca476f34a23b692dd8c04ae1f148\nhttps://github.com/roziscoding/jack/releases/tag/v0.1.0\nhttps://github.com/roziscoding/jack/security/advisories/GHSA-8gw5-7585-4997"], "statement": "Red Hat Product Security rates this vulnerability as having a Moderate impact because exploitation requires valid peer-level authentication and remains restricted to credential leakage rather than arbitrary code execution. Additionally, the jack component is not distributed or supported in Red Hat enterprise products, leaving default Red Hat environments unaffected.", "threat_severity": "Moderate"}