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CVE-2016-10033

critical · 9.8Actively exploited

On the CISA Known Exploited Vulnerabilities catalog

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Added 2025-07-07Remediation due 2025-07-28

A public exploit / detection template exists

Weaponised detection is publicly available, which meaningfully raises real-world risk regardless of CVSS. nuclei-templates

The mailSend function in the isMail transport in PHPMailer before 5.2.18 might allow remote attackers to pass extra parameters to the mail command and consequently execute arbitrary code via a \" (backslash double quote) in a crafted Sender property.

9.8
CVSS
99.7%
EPSS (exploit prob.)
100th
EPSS percentile
2016-12-30
Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-88

Affected products

VendorProductAffected versions
phpmailer_projectphpmailer< 5.2.18
wordpresswordpress<= 4.7
joomlajoomla!>= 1.5.0, <= 3.6.5

Check a specific version with /api/v1/cve/match.

References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2016-10033