Vulnerability in Phpmailer
CVE-2021-3603
PHPMailer 6.4.1 and earlier contain a vulnerability that can result in untrusted code being called (if such code is injected into the host project's scope by other means). If the $patternselect parameter to validateAddress() is set to 'php…
EPSS: 0.023 (81.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Phpmailer — versions unspecified
- Phpmailer_project Phpmailer
- Fedoraproject Fedora — versions 33, 34
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@huntr.dev (x_refsource_CONFIRM, Product)
- security@huntr.dev (Patch, Third Party Advisory, x_refsource_MISC)
- security@huntr.dev (x_refsource_FEDORA, vendor-advisory)
- security@huntr.dev (x_refsource_FEDORA, vendor-advisory)
Frequently asked questions
- What is CVE-2021-3603?
- CVE-2021-3603 is a high-severity vulnerability in Phpmailer, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 8.1/10. Published 2021-06-17.
- How severe is CVE-2021-3603?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2021-3603 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.