{"id":"CVE-2020-13625","aliases":["ALPINE-CVE-2020-13625","BIT-phpmailer-2020-13625","CLSA-2026-1771375983","DEBIAN-CVE-2020-13625","DLA-2244-1","DLA-2306-1","EUVD-2020-0422","GHSA-f7hx-fqxw-rvvj","MGASA-2020-0313","UBUNTU-CVE-2020-13625","USN-4505-1","USN-5956-1","openSUSE-SU-2020:1060-1","openSUSE-SU-2020:1106-1","openSUSE-SU-2024:10670-1"],"status":"published","title":"Insufficient output escaping of attachment names in PHPMailer","description":"PHPMailer before 6.1.6 contains an output escaping bug when the name of a file attachment contains a double quote character. This can result in the file type being misinterpreted by the receiver or any mail relay processing the message.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.0378,"percentile":0.90105,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-116"],"published":"2020-05-27T16:37:02Z","modified":"2026-11-03T06:32:30Z","fixes":[{"ecosystem":"Packagist","package":"phpmailer/phpmailer","fixed_in":["6.1.6"],"sources":["ghsa","osv"]},{"ecosystem":"Alpine:v3.13","package":"cacti","fixed_in":["1.2.13-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.14","package":"cacti","fixed_in":["1.2.13-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.15","package":"cacti","fixed_in":["1.2.13-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.16","package":"cacti","fixed_in":["1.2.13-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.17","package":"cacti","fixed_in":["1.2.13-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"cacti","fixed_in":["1.2.13-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"cacti","fixed_in":["1.2.13-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"cacti","fixed_in":["1.2.13-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"cacti","fixed_in":["1.2.13-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"cacti","fixed_in":["1.2.13-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"cacti","fixed_in":["1.2.13-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"cacti","fixed_in":["1.2.13-r0"],"sources":["osv"]},{"ecosystem":"Bitnami","package":"phpmailer","fixed_in":["6.1.6"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"libphp-phpmailer","fixed_in":["6.1.6-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"libphp-phpmailer","fixed_in":["6.1.6-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libphp-phpmailer","fixed_in":["6.1.6-1"],"sources":["osv"]},{"ecosystem":"Debian:8","package":"libphp-phpmailer","fixed_in":["5.2.9+dfsg-2+deb8u6"],"sources":["osv"]},{"ecosystem":"Debian:9","package":"libphp-phpmailer","fixed_in":["5.2.14+dfsg-2.3+deb9u2"],"sources":["osv"]},{"ecosystem":"Mageia:7","package":"php-phpmailer","fixed_in":["6.1.6-1.mga7"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"libphp-phpmailer","fixed_in":["5.2.14+dfsg-1ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"libphp-phpmailer","fixed_in":["5.2.14+dfsg-2.3+deb9u2build0.18.04.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:20.04:LTS","package":"libphp-phpmailer","fixed_in":["6.0.6-0.1ubuntu0.1~esm1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"phpmailer/phpmailer","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.6"}]}]},{"source":"osv","ecosystem":"Alpine:v3.13","package":"cacti","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.13-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.14","package":"cacti","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.13-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.15","package":"cacti","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.13-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.16","package":"cacti","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.13-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.17","package":"cacti","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.13-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.18","package":"cacti","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.13-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.19","package":"cacti","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.13-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.20","package":"cacti","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.13-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.21","package":"cacti","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.13-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"cacti","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.13-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"cacti","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.13-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"cacti","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.13-r0"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"phpmailer","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"6.1.6"}]}]},{"source":"osv","ecosystem":"TuxCare:Packagist","package":"phpmailer/phpmailer","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.2.28"},{"fixed":"5.2.28-p1+tuxcare"}]}],"versions":["5.2.28"],"bundled":3},{"source":"osv","ecosystem":"Debian:12","packa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Link","web"]},{"url":"https://lists.debian.org/debian-lts-announce/2020/08/msg00004.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory","web"]},{"url":"https://usn.ubuntu.com/4505-1/","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","Third Party 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-7237","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-8813","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2020-13625","description":"PHPMailer before 6.1.6 contains an output escaping bug when the name of a file attachment contains a double quote character. This can result in the file type being misinterpreted by the receiver or any mail relay processing the message.","status":"published","published":"2020-06-08T16:03:22Z","modified":"2024-08-04T12:25:16.318Z","updated_at":"2026-11-02T14:35:53.868619Z"}],"euvd":[{"id":"EUVD-2020-0422","description":"PHPMailer before 6.1.6 contains an output escaping bug when the name of a file attachment contains a double quote character. This can result in the file type being misinterpreted by the receiver or any mail relay processing the message.","status":"published","published":"2020-06-08T16:03:22Z","modified":"2024-08-04T12:25:16Z","updated_at":"2026-11-03T03:07:37.234427Z"}],"ghsa":[{"id":"GHSA-f7hx-fqxw-rvvj","title":"Insufficient output escaping of attachment names in PHPMailer","description":"### Impact\nCWE-116: Incorrect output escaping.\n\nAn attachment added like this (note the double quote within the attachment name, which is entirely valid):\n\n    $mail-\u003eaddAttachment('/tmp/attachment.tmp', 'filename.html\";.jpg');\n\nWill result in a message containing these headers:\n\n    Content-Type: application/octet-stream; name=\"filename.html\";.jpg\"\n    Content-Disposition: attachment; filename=\"filename.html\";.jpg\"\n\nThe attachment will be named `filename.html`, and the trailing `\";.jpg\"` will be ignored. Mail filters that reject `.html` attachments but permit `.jpg` attachments may be fooled by this.\n\nNote that the MIME type itself is obtained automatically from the *source filename* (in this case `attachment.tmp`, which maps to a generic `application/octet-stream` type), and not the *name* given to the attachment (though these are the same if a separate name is not provided), though it can be set explicitly in other parameters to attachment methods.\n\n### Patches\nPatched in PHPMailer 6.1.6 by escaping double quotes within the name using a backslash, as per RFC822 section 3.4.1, resulting in correctly escaped headers like this:\n\n    Content-Type: application/octet-stream; name=\"filename.html\\\";.jpg\"\n    Content-Disposition: attachment; filename=\"filename.html\\\";.jpg\"\n\n### Workarounds\nReject or filter names and filenames containing double quote (`\"`) characters before passing them to attachment functions such as `addAttachment()`.\n\n### References\n[CVE-2020-13625](https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-13625).\n[PHPMailer 6.1.6 release](https://github.com/PHPMailer/PHPMailer/releases/tag/v6.1.6)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [the PHPMailer repo](https://github.com/PHPMailer/PHPMailer/issues)","status":"published","published":"2020-05-27T16:37:02Z","modified":"2023-01-20T22:02:44Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-116"],"updated_at":"2026-11-02T14:36:14.033357Z"}],"nvd":[{"id":"CVE-2020-13625","description":"PHPMailer before 6.1.6 contains an output escaping bug when the name of a file attachment contains a double quote character. This can result in the file type being misinterpreted by the receiver or any mail relay processing the message.","status":"published","published":"2020-06-08T17:15:10.097Z","modified":"2026-06-17T02:53:27.837Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-116"],"updated_at":"2026-11-02T14:06:05.962132Z"}],"osv":[{"id":"ALPINE-CVE-2020-13625","description":"PHPMailer before 6.1.6 contains an output escaping bug when the name of a file attachment contains a double quote character. This can result in the file type being misinterpreted by the receiver or any mail relay processing the message.","status":"published","published":"2020-06-08T17:15:10.097Z","modified":"2026-11-03T06:32:30.738898382Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T07:17:41.158523Z"},{"id":"CVE-2020-13625","description":"PHPMailer before 6.1.6 contains an output escaping bug when the name of a file attachment contains a double quote character. This can result in the file type being misinterpreted by the receiver or any mail relay processing the message.","status":"published","published":"2020-06-08T17:15:10.097Z","modified":"2026-10-20T10:51:47.646780312Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:14.418339Z"},{"id":"DEBIAN-CVE-2020-13625","description":"PHPMailer before 6.1.6 contains an output escaping bug when the name of a file attachment contains a double quote character. This can result in the file type being misinterpreted by the receiver or any mail relay processing the message.","status":"published","published":"2020-06-08T17:15:10.097Z","modified":"2026-10-26T12:00:36.506676135Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:45:32.862554Z"},{"id":"GHSA-f7hx-fqxw-rvvj","title":"Insufficient output escaping of attachment names in PHPMailer","description":"### Impact\nCWE-116: Incorrect output escaping.\n\nAn attachment added like this (note the double quote within the attachment name, which is entirely valid):\n\n    $mail-\u003eaddAttachment('/tmp/attachment.tmp', 'filename.html\";.jpg');\n\nWill result in a message containing these headers:\n\n    Content-Type: application/octet-stream; name=\"filename.html\";.jpg\"\n    Content-Disposition: attachment; filename=\"filename.html\";.jpg\"\n\nThe attachment will be named `filename.html`, and the trailing `\";.jpg\"` will be ignored. Mail filters that reject `.html` attachments but permit `.jpg` attachments may be fooled by this.\n\nNote that the MIME type itself is obtained automatically from the *source filename* (in this case `attachment.tmp`, which maps to a generic `application/octet-stream` type), and not the *name* given to the attachment (though these are the same if a separate name is not provided), though it can be set explicitly in other parameters to attachment methods.\n\n### Patches\nPatched in PHPMailer 6.1.6 by escaping double quotes within the name using a backslash, as per RFC822 section 3.4.1, resulting in correctly escaped headers like this:\n\n    Content-Type: application/octet-stream; name=\"filename.html\\\";.jpg\"\n    Content-Disposition: attachment; filename=\"filename.html\\\";.jpg\"\n\n### Workarounds\nReject or filter names and filenames containing double quote (`\"`) characters before passing them to attachment functions such as `addAttachment()`.\n\n### References\n[CVE-2020-13625](https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-13625).\n[PHPMailer 6.1.6 release](https://github.com/PHPMailer/PHPMailer/releases/tag/v6.1.6)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [the PHPMailer repo](https://github.com/PHPMailer/PHPMailer/issues)","status":"published","published":"2020-05-27T16:37:02Z","modified":"2026-07-08T05:59:55.175185807Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-116"],"updated_at":"2026-11-02T15:46:46.006631Z"},{"id":"UBUNTU-CVE-2020-13625","description":"PHPMailer before 6.1.6 contains an output escaping bug when the name of a file attachment contains a double quote character. This can result in the file type being misinterpreted by the receiver or any mail relay processing the message.","status":"published","published":"2020-06-08T17:15:00Z","modified":"2026-02-04T03:23:34.57339Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:54:22.804634Z"},{"id":"BIT-phpmailer-2020-13625","description":"PHPMailer before 6.1.6 contains an output escaping bug when the name of a file attachment contains a double quote character. This can result in the file type being misinterpreted by the receiver or any mail relay processing the message.","status":"published","published":"2024-03-06T11:02:00.082Z","modified":"2026-09-08T08:47:35.972072785Z","updated_at":"2026-11-02T15:28:34.724063Z"},{"id":"CLSA-2026-1771375983","title":"TuxCare security update for phpmailer/phpmailer (3 CVEs)","description":"TuxCare rebuilt phpmailer/phpmailer to address 3 CVEs. Fixed in 5.2.28-p1+tuxcare.","status":"published","published":"2026-08-04T14:52:36Z","modified":"2026-10-15T09:48:04.648075561Z","updated_at":"2026-11-02T15:43:43.249928Z"},{"id":"DLA-2244-1","title":"libphp-phpmailer - security update","status":"published","published":"2020-06-11T00:00:00Z","modified":"2026-03-09T01:23:16.3739Z","updated_at":"2026-11-02T15:46:10.227108Z"},{"id":"DLA-2306-1","title":"libphp-phpmailer - security update","status":"published","published":"2020-08-01T00:00:00Z","modified":"2026-03-09T01:18:16.145511Z","updated_at":"2026-11-02T15:46:10.227108Z"},{"id":"MGASA-2020-0313","title":"Updated php-phpmailer packages fix security vulnerability","description":"Fix insufficient output escaping bug in file attachment names\n(CVE-2020-13625).\n","status":"published","published":"2020-08-01T09:25:19Z","modified":"2026-04-16T04:41:52.028361154Z","updated_at":"2026-11-02T15:49:41.151324Z"},{"id":"openSUSE-SU-2020:1060-1","title":"Security update for cacti, cacti-spine","description":"This update for cacti, cacti-spine fixes the following issues:\n\n- cacti 1.2.13:\n\n  * Query XSS vulnerabilities require vendor package update\n    (CVE-2020-11022 / CVE-2020-11023)\n  * Lack of escaping on some pages can lead to XSS exposure\n  * Update PHPMailer to 6.1.6 (CVE-2020-13625)\n  * SQL Injection vulnerability due to input validation failure when\n    editing colors (CVE-2020-14295, boo#1173090)\n  * Lack of escaping on template import can lead to XSS exposure\n\n- switch from cron to systemd timers (boo#1115436):\n  + cacti-cron.timer\n  + cacti-cron.service\n- avoid potential root escalation on systems with fs.protected_hardlinks=0\n  (boo#1154087): handle directory permissions in file section instead\n  of using chown during post installation\n- rewrote apache configuration to get rid of .htaccess files and \n  explicitely disable directory permissions per default \n  (only allow a limited, well-known set of directories)\n\n","status":"published","published":"2020-07-25T18:21:21Z","modified":"2026-02-04T04:27:08.288093Z","updated_at":"2026-11-02T16:58:31.517538Z"},{"id":"openSUSE-SU-2020:1106-1","title":"Security update for cacti, cacti-spine","description":"This update for cacti, cacti-spine fixes the following issues:\n\n- cacti 1.2.13:\n\n  * Query XSS vulnerabilities require vendor package update\n    (CVE-2020-11022 / CVE-2020-11023)\n  * Lack of escaping on some pages can lead to XSS exposure\n  * Update PHPMailer to 6.1.6 (CVE-2020-13625)\n  * SQL Injection vulnerability due to input validation failure when\n    editing colors (CVE-2020-14295, boo#1173090)\n  * Lack of escaping on template import can lead to XSS exposure\n\n- switch from cron to systemd timers (boo#1115436):\n  + cacti-cron.timer\n  + cacti-cron.service\n- avoid potential root escalation on systems with fs.protected_hardlinks=0\n  (boo#1154087): handle directory permissions in file section instead\n  of using chown during post installation\n- rewrote apache configuration to get rid of .htaccess files and \n  explicitely disable directory permissions per default \n  (only allow a limited, well-known set of directories)\n\n\nThis update was imported from the openSUSE:Leap:15.1:Update update project.","status":"published","published":"2020-07-27T21:28:47Z","modified":"2026-02-04T02:54:37.245476Z","updated_at":"2026-11-02T16:58:31.517538Z"},{"id":"openSUSE-SU-2024:10670-1","title":"cacti-1.2.18-1.2 on GA media","description":"These are all security issues fixed in the cacti-1.2.18-1.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T03:13:56.743451Z","updated_at":"2026-11-02T16:58:34.487567Z"},{"id":"USN-4505-1","title":"libphp-phpmailer vulnerability","description":"Elar Lang discovered that PHPMailer did not properly escape double quote\ncharacters in filenames. A remote attacker could possibly exploit this\nwith a crafted filename to bypass attachment filters that are based on\nmatching filename extensions. (CVE-2020-13625)\n","status":"published","published":"2020-09-16T15:25:17Z","modified":"2026-02-10T04:41:55Z","updated_at":"2026-11-02T16:58:14.547547Z"},{"id":"USN-5956-1","title":"libphp-phpmailer vulnerabilities","description":"Dawid Golunski discovered that PHPMailer was not properly escaping user\ninput data used as arguments to functions executed by the system shell. An\nattacker could possibly use this issue to execute arbitrary code. This\nissue only affected Ubuntu 16.04 ESM. (CVE-2016-10033, CVE-2016-10045)\n\nIt was discovered that PHPMailer was not properly escaping characters\nin certain fields of the code_generator.php example code. An attacker\ncould possibly use this issue to conduct cross-site scripting (XSS)\nattacks. This issue was only fixed in Ubuntu 16.04 ESM and Ubuntu 18.04\nESM. (CVE-2017-11503)\n\nYongxiang Li discovered that PHPMailer was not properly converting\nrelative paths provided as user input when adding attachments to messages,\nwhich could lead to relative image URLs being treated as absolute local\nfile paths and added as attachments. An attacker could possibly use this\nissue to access unauthorized resources and expose sensitive information.\nThis issue only affected Ubuntu 16.04 ESM. (CVE-2017-5223)\n\nSehun Oh discovered that PHPMailer was not properly processing untrusted\nnon-local file attachments, which could lead to an object injection. An\nattacker could possibly use this issue to execute arbitrary code. This\nissue only affected Ubuntu 16.04 ESM. (CVE-2018-19296)\n\nElar Lang discovered that PHPMailer was not properly escaping file\nattachment names, which could lead to a misinterpretation of file types\nby entities processing the message. An attacker could possibly use this\nissue to bypass attachment filters. This issue was only fixed in Ubuntu\n16.04 ESM and Ubuntu 20.04 ESM. (CVE-2020-13625)\n\nIt was discovered that PHPMailer was not properly handling callables in\nits validateAddress function, which could result in untrusted code being\ncalled should the global namespace contain a function called 'php'. An\nattacker could possibly use this issue to execute arbitrary code. This\nissue was only fixed in Ubuntu 20.04 ESM and Ubuntu 22.04 ESM.\n(CVE-2021-3603)\n","status":"published","published":"2023-03-15T14:33:12Z","modified":"2026-06-25T13:31:53.33751944Z","updated_at":"2026-11-02T16:58:16.738762Z"}]}}