What is CVE-2024-45518?

CVE-2024-45518 is a high-severity vulnerability in Zimbra Collaboration, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.8/10. Published 2024-10-22.

How severe is CVE-2024-45518?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2024-45518 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

SSRF in Zimbra Collaboration

CVE-2024-45518

An issue was discovered in Zimbra Collaboration (ZCS) 10.1.x before 10.1.1, 10.0.x before 10.0.9, 9.0.0 before Patch 41, and 8.8.15 before Patch 46. It allows authenticated users to exploit Server-Side Request Forgery (SSRF) due to improper input sanitization and misconfigured domain whitelisting. This issue permits unauthorized HTTP requests to be sent to internal services, which can lead to Remote Code Execution (RCE) by chaining Command Injection within the internal service. When combined with existing XSS vulnerabilities, this SSRF issue can further facilitate Remote Code Execution (RCE).

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2024-10-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.207 (97.5th percentile), scored 2026-09-27.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.202 · newest: 0.207 · change: +0.006

Affected products

Zimbra Collaboration — versions 8.8.15, 9.0.0, 10.1.0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

Public proof-of-concept exploits

References

wiki.zimbra.com/wiki/Zimbra_Security_Advisories (Vendor Advisory)
wiki.zimbra.com/wiki/Security_Center (Release Notes)
wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy (Product)
wiki.zimbra.com/wiki/Zimbra_Releases/10.1.1 (Release Notes)
wiki.zimbra.com/wiki/Zimbra_Releases/10.0.9 (Release Notes)
wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P41 (Release Notes)
wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P46 (Release Notes)

Frequently asked questions

What is CVE-2024-45518?: CVE-2024-45518 is a high-severity vulnerability in Zimbra Collaboration, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.8/10. Published 2024-10-22.
How severe is CVE-2024-45518?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2024-45518 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.