# CVE-2022-27926: Zimbra - XSS

> Live exploitation tracking for CVE-2022-27926 by the CrowdSec Live Exploit Tracker, built from real-world attack data crowdsourced from CrowdSec's global network.

Page: https://tracker.crowdsec.net/cves/CVE-2022-27926

## Key facts

- **Exploitation phase:** Limited Exploitation. The vulnerability is known but shows very limited attacker interest or exploitation activity.
- **CVSS score:** 6.1
- **Public exploit available:** Yes
- **Affected products:** Zimbra Collaboration Suite
- **Weaknesses:** CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'))

## Description

A reflected cross-site scripting (XSS) vulnerability in the /public/launchNewWindow.jsp component of Zimbra Collaboration (aka ZCS) 9.0 allows unauthenticated attackers to execute arbitrary web script or HTML via request parameters.

## CrowdSec analysis

[CVE-2022-27926](https://euvd.enisa.europa.eu/vulnerability/CVE-2022-27926) is a reflected cross-site scripting (XSS) vulnerability affecting Zimbra Collaboration, specifically within the `/public/launchNewWindow.jsp` component. This flaw enables unauthenticated attackers to inject and execute arbitrary web scripts or HTML via crafted requests.

CrowdSec has been tracking this vulnerability and its exploits since 15th of December 2023.

Insights from the CrowdSec network reveal that the attackers trying to exploit CVE-2022-27926 are composed of a fairly even mix of opportunistic and targeted actors. Some attackers employ preliminary reconnaissance, while others use indiscriminate scanning.
In addition, according to the CrowdSec network, attack volume against CVE-2022-27926 has dipped slightly compared to the previous week. Although still commonly targeted, the decline suggests a cooling-off period. Long-term relevance remains, but attention is waning.

Attackers typically focus on requests to the `/public/launchNewWindow.jsp` endpoint when attempting to leverage this vulnerability.

## Timeline

- 2022-04-20: CVE Published. CVE-2022-27926 is published to NVD.
- 2023-04-03: CISA KEV. CVE-2022-27926 is added to the Known Exploited Vulnerabilities catalog by CISA.
- 2023-04-24: CISA Remediation Deadline. Expiration of the CISA remediation deadline as described in [BOD 22-01](https://www.cisa.gov/news-events/directives/bod-22-01-reducing-significant-risk-known-exploited-vulnerabilities).
- 2023-12-15: Rule Released. CrowdSec releases a rule to detect CVE-2022-27926 exploitation attempts against the CrowdSec Network.
- 2024-11-27: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2022-27926 for the first time.

## References

- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
- https://wiki.zimbra.com/wiki/Security_Center
- https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P24
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2022/CVE-2022-27926.yaml

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2022-27926) follows observed exploitation activity for CVE-2022-27926. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.