{"id":"CVE-2021-43171","aliases":["EUVD-2021-30118","GHSA-xqgq-4wpf-xfr8"],"status":"published","title":"Improper verification of applications' cryptographic signatures in the /e/OS app store client App...","description":"Improper verification of applications' cryptographic signatures in the /e/OS app store client App Lounge before 0.19q allows attackers in control of the application server to install malicious applications on user's systems by altering the server's API response.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00408,"percentile":0.35501,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-347"],"published":"2023-08-22T00:00:00Z","modified":"2026-07-09T01:06:49Z","products":[{"vendor":"e.foundation","product":"app_lounge"}],"references":[{"url":"https://nervuri.net/e/apps","tags":["x_transferred","Third Party Advisory","advisory"]},{"url":"https://gitlab.e.foundation/e/os/releases/-/releases/v0.19-q#sparkles-we-embedded-other-improvements","tags":["x_transferred","Release Notes","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43171"},{"url":"https://github.com/advisories/GHSA-xqgq-4wpf-xfr8"}],"sources":{"cve":[{"id":"CVE-2021-43171","description":"Improper verification of applications' cryptographic signatures in the /e/OS app store client App Lounge before 0.19q allows attackers in control of the application server to install malicious applications on user's systems by altering the server's API response.","status":"published","published":"2023-08-22T00:00:00Z","modified":"2024-10-03T17:59:12.104Z","updated_at":"2026-11-02T14:32:57.033395Z"}],"euvd":[{"id":"EUVD-2021-30118","description":"Improper verification of applications' cryptographic signatures in the /e/OS app store client App Lounge before 0.19q allows attackers in control of the application server to install malicious applications on user's systems by altering the server's API response.","status":"published","published":"2023-08-22T00:00:00Z","modified":"2024-10-03T17:59:12Z","updated_at":"2026-11-03T00:27:54.233481Z"}],"ghsa":[{"id":"GHSA-xqgq-4wpf-xfr8","title":"Improper verification of applications' cryptographic signatures in the /e/OS app store client App...","description":"Improper verification of applications' cryptographic signatures in the /e/OS app store client App Lounge before 0.19q allows attackers in control of the application server to install malicious applications on user's systems by altering the server's API response.","status":"published","published":"2023-08-22T21:30:26Z","modified":"2024-04-04T07:07:15Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:56:48.229282Z"}],"nvd":[{"id":"CVE-2021-43171","description":"Improper verification of applications' cryptographic signatures in the /e/OS app store client App Lounge before 0.19q allows attackers in control of the application server to install malicious applications on user's systems by altering the server's API response.","status":"published","published":"2023-08-22T19:16:21.76Z","modified":"2026-06-17T04:10:34.78Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:07:07.764332Z"}],"osv":[{"id":"CVE-2021-43171","description":"Improper verification of applications' cryptographic signatures in the /e/OS app store client App Lounge before 0.19q allows attackers in control of the application server to install malicious applications on user's systems by altering the server's API response.","status":"published","published":"2023-08-22T19:16:21.76Z","modified":"2026-07-09T01:06:49.487461Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:21.557945Z"}]}}