CVE-2020-13625

Exp

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.

Published: 2020-06-08 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-13625 is rated High Exploit Risk (74.8/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.78%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2020-13625

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-13625

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 4.93% 3.78% -1.15%
2 2026-05-26 4.55% 4.93% +0.39%
3 2026-03-25 — 4.55% —

Full EPSS history (31 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-13625

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2020-13625

GitHub Security Advisory for CVE-2020-13625

GHSA-f7hx-fqxw-rvvj · Severity: high · Ecosystem: composer — Insufficient output escaping of attachment names in PHPMailer

OS Trackers for CVE-2020-13625

vendor priority summary link
alpine high CVE-2020-13625: 1 source package rows (cacti); 7 state rows across 7 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 7, open 0. https://security.alpinelinux.org/vuln/CVE-2020-13625
debian not yet assigned CVE-2020-13625 not yet assigned priority: Debian including 1 source packages (libphp-phpmailer), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2020-13625
ubuntu medium CVE-2020-13625 medium priority: Ubuntu including 1 source packages (libphp-phpmailer), 16 status rows across 16 suites (bionic, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, trusty, upstream, xenial): not-affected 10, released 4, DNE 1, ignored 1. https://ubuntu.com/security/CVE-2020-13625

Affected software / configurations for CVE-2020-13625

Vendor Product Version Raw CPE
phpmailer_project phpmailer < 6.1.6 cpe:2.3:a:phpmailer_project:phpmailer:*:*:*:*:*:*:*:*
fedoraproject fedora 31 cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
fedoraproject fedora 32 cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

References for CVE-2020-13625

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00067.html Broken Link
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00085.html Broken Link
https://github.com/PHPMailer/PHPMailer/releases/tag/v6.1.6 Release Notes Third Party Advisory
https://github.com/PHPMailer/PHPMailer/security/advisories/GHSA-f7hx-fqxw-rvvj Exploit Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00014.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00004.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EFM3BZABL6RUHTVMXSC7OFMP4CKWMRPJ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SMH4TC5XTS3KZVGMSKEPPBZ2XTZCKKCX/
https://usn.ubuntu.com/4505-1/ Third Party Advisory
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