In all released versions of Eclipse Equinox, at least until version 4.21 (September 2021), installation can be vulnerable to man-in-the-middle attack if using p2 repos that are HTTP; that can then be exploited to serve incorrect p2 metadata and entirely alter the local installation, particularly by installing plug-ins that may then run malicious code.

References

• https://nvd.nist.gov/vuln/detail/CVE-2021-41033
• https://bugs.eclipse.org/bugs/show_bug.cgi?id=575688