CVE-2024-27443 is a Cross-Site Scripting (XSS) vulnerability in Zimbra Collaboration (ZCS) versions 9.0 and 10.0, specifically within the CalendarInvite feature of the classic webmail interface. This medium-severity vulnerability (CVSS 6.1) allows an unauthenticated attacker to execute arbitrary JavaScript by sending a specially crafted email with an embedded XSS payload in the calendar header, which triggers when a victim views the message. The vulnerability is actively exploited in the wild, as indicated by its presence in the KEV catalog and high EPSS score, and has garnered significant community discussion and media coverage. While no Metasploit or ExploitDB modules exist, Nuclei templates are available, suggesting readily accessible exploit code.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 10.0.0, < 10.0.7CPE matchmatch criteria | cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* | ||
9.0.0CPE matchmatch criteria | cpe:2.3:a:zimbra:collaboration:9.0.0:-:*:*:*:*:*:* | ||
9.0.0CPE matchmatch criteria | cpe:2.3:a:zimbra:collaboration:9.0.0:p0:*:*:*:*:*:* | ||
9.0.0CPE matchmatch criteria | cpe:2.3:a:zimbra:collaboration:9.0.0:p1:*:*:*:*:*:* | ||
9.0.0CPE matchmatch criteria | cpe:2.3:a:zimbra:collaboration:9.0.0:p10:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.