CVE-2021-34436 describes a critical remote code execution (RCE) and XML External Entity (XXE) vulnerability in Eclipse Theia versions 0.1.1 to 0.2.0, specifically within its default theia-xml-extension. This flaw, rated 9.8 CVSS (CRITICAL), allows unauthenticated attackers to achieve full compromise (confidentiality, integrity, availability) with low attack complexity over the network. Despite its high severity, there is currently no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 0.1.1, <= 0.2.0CPE matchmatch criteria | cpe:2.3:a:eclipse:theia:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.