{"id":"CVE-2019-8338","aliases":["EUVD-2019-17728","GHSA-8m6f-q6pm-9pmm"],"status":"published","title":"The signature verification routine in the Airmail GPG-PGP Plugin, versions 1.0 (9) and earlier,...","description":"The signature verification routine in the Airmail GPG-PGP Plugin, versions 1.0 (9) and earlier, does not verify the status of the signature at all, which allows remote attackers to spoof arbitrary email signatures by crafting a signed email with an invalid signature. Also, it does not verify the validity of the signing key, which allows remote attackers to spoof arbitrary email signatures by crafting a key with a fake user ID (email address) and injecting it into the user's keyring.","severity":{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01729,"percentile":0.77735,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-347"],"published":"2019-05-16T16:02:46Z","modified":"2026-06-17T02:41:51Z","products":[{"vendor":"gpg-pgp_project","product":"gpg-pgp"}],"references":[{"url":"https://github.com/Airmail/AirmailPlugIn-Framework/commits/master","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory"]},{"url":"http://seclists.org/fulldisclosure/2019/Apr/38","tags":["mailing-list","x_refsource_FULLDISC","x_transferred","Mailing List","Third Party Advisory"]},{"url":"http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://www.openwall.com/lists/oss-security/2019/04/30/4","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory"]},{"url":"https://github.com/RUB-NDS/Johnny-You-Are-Fired","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-8338"},{"url":"https://github.com/advisories/GHSA-8m6f-q6pm-9pmm"}],"sources":{"cve":[{"id":"CVE-2019-8338","description":"The signature verification routine in the Airmail GPG-PGP Plugin, versions 1.0 (9) and earlier, does not verify the status of the signature at all, which allows remote attackers to spoof arbitrary email signatures by crafting a signed email with an invalid signature. Also, it does not verify the validity of the signing key, which allows remote attackers to spoof arbitrary email signatures by crafting a key with a fake user ID (email address) and injecting it into the user's keyring.","status":"published","published":"2019-05-16T16:02:46Z","modified":"2024-08-04T21:17:31.096Z","updated_at":"2026-11-02T14:20:22.019351Z"}],"euvd":[{"id":"EUVD-2019-17728","description":"The signature verification routine in the Airmail GPG-PGP Plugin, versions 1.0 (9) and earlier, does not verify the status of the signature at all, which allows remote attackers to spoof arbitrary email signatures by crafting a signed email with an invalid signature. Also, it does not verify the validity of the signing key, which allows remote attackers to spoof arbitrary email signatures by crafting a key with a fake user ID (email address) and injecting it into the user's keyring.","status":"published","published":"2019-05-16T16:02:46Z","modified":"2024-08-04T21:17:31Z","updated_at":"2026-11-03T03:06:42.975045Z"}],"ghsa":[{"id":"GHSA-8m6f-q6pm-9pmm","title":"The signature verification routine in the Airmail GPG-PGP Plugin, versions 1.0 (9) and earlier,...","description":"The signature verification routine in the Airmail GPG-PGP Plugin, versions 1.0 (9) and earlier, does not verify the status of the signature at all, which allows remote attackers to spoof arbitrary email signatures by crafting a signed email with an invalid signature. Also, it does not verify the validity of the signing key, which allows remote attackers to spoof arbitrary email signatures by crafting a key with a fake user ID (email address) and injecting it into the user's keyring.","status":"published","published":"2022-05-24T16:45:58Z","modified":"2024-04-04T00:41:30Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:55:51.119563Z"}],"nvd":[{"id":"CVE-2019-8338","description":"The signature verification routine in the Airmail GPG-PGP Plugin, versions 1.0 (9) and earlier, does not verify the status of the signature at all, which allows remote attackers to spoof arbitrary email signatures by crafting a signed email with an invalid signature. Also, it does not verify the validity of the signing key, which allows remote attackers to spoof arbitrary email signatures by crafting a key with a fake user ID (email address) and injecting it into the user's keyring.","status":"published","published":"2019-05-16T17:29:01.34Z","modified":"2026-06-17T02:41:51.833Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:05:13.880207Z"}]}}