Prototype Pollution in Phpmailer Project
CVE-2018-19296
PHPMailer before 5.2.27 and 6.x before 6.0.6 is vulnerable to an object injection attack.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.022 (82.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
- Phpmailer Project
- WordPress
- Debian Linux — versions 8.0, 9.0
- Fedoraproject Fedora — versions 33, 34
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/PHPMailer/PHPMailer/releases/tag/v5.2.27 (Release Notes, Vendor Advisory)
- lists.debian.org/debian-lts-announce/2018/12/msg00020.html (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2018/dsa-4351 (vendor-advisory, Third Party Advisory)
- github.com/PHPMailer/PHPMailer/releases/tag/v6.0.6 (Release Notes, Vendor Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2018-19296?
- CVE-2018-19296 is a high-severity vulnerability in Phpmailer Project, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2018-11-16.
- How severe is CVE-2018-19296?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2018-19296 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.