{"id":"CVE-2020-1897","aliases":["EUVD-2020-12723","GHSA-838g-g793-hh7g"],"status":"published","title":"A use-after-free is possible due to an error in lifetime management in the request adaptor when a...","description":"A use-after-free is possible due to an error in lifetime management in the request adaptor when a malicious client invokes request error handling in a specific sequence. This issue affects versions of proxygen prior to v2020.05.18.00.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01149,"percentile":0.67077,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-416"],"published":"2020-05-18T21:30:14Z","modified":"2026-10-31T07:05:19Z","products":[{"vendor":"facebook","product":"proxygen"}],"references":[{"url":"https://www.facebook.com/security/advisories/cve-2020-1897","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-1897"},{"url":"https://github.com/advisories/GHSA-838g-g793-hh7g"}],"sources":{"cve":[{"id":"CVE-2020-1897","description":"A use-after-free is possible due to an error in lifetime management in the request adaptor when a malicious client invokes request error handling in a specific sequence. This issue affects versions of proxygen prior to v2020.05.18.00.","status":"published","published":"2020-05-18T21:30:14Z","modified":"2024-08-04T06:53:59.853Z","updated_at":"2026-11-02T14:35:56.638833Z"}],"euvd":[{"id":"EUVD-2020-12723","description":"A use-after-free is possible due to an error in lifetime management in the request adaptor when a malicious client invokes request error handling in a specific sequence. This issue affects versions of proxygen prior to v2020.05.18.00.","status":"published","published":"2020-05-18T21:30:14Z","modified":"2024-08-04T06:53:59Z","updated_at":"2026-11-03T03:08:11.523019Z"}],"ghsa":[{"id":"GHSA-838g-g793-hh7g","title":"A use-after-free is possible due to an error in lifetime management in the request adaptor when a...","description":"A use-after-free is possible due to an error in lifetime management in the request adaptor when a malicious client invokes request error handling in a specific sequence. This issue affects versions of proxygen prior to v2020.05.18.00.","status":"published","published":"2022-05-24T17:18:08Z","modified":"2023-01-29T05:02:34Z","updated_at":"2026-11-02T14:45:07.130995Z"}],"nvd":[{"id":"CVE-2020-1897","description":"A use-after-free is possible due to an error in lifetime management in the request adaptor when a malicious client invokes request error handling in a specific sequence. This issue affects versions of proxygen prior to v2020.05.18.00.","status":"published","published":"2020-05-18T22:15:13Z","modified":"2026-06-17T03:02:34.55Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:06:00.784809Z"}],"osv":[{"id":"CVE-2020-1897","description":"A use-after-free is possible due to an error in lifetime management in the request adaptor when a malicious client invokes request error handling in a specific sequence. This issue affects versions of proxygen prior to v2020.05.18.00.","status":"published","published":"2020-05-18T22:15:13Z","modified":"2026-10-31T07:05:19.942400025Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:15.212689Z"}]}}