6.1

CVE-2021-28161: eclipse theia Cross-site Scripting

CVSS: 6.1v3.1MediumModified
AliasesGHSA-cwg9-c9cr-p5fq
Published 12-03-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-28161 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in eclipse theia. EPSS estimates a 0.71% chance of exploitation in the next 30 days, higher than 52.5% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (NVD)
EPSS score
0.71%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 12-03-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

In Eclipse Theia versions up to and including 1.8.0, in the debug console there is no HTML escaping, so arbitrary Javascript code can be injected.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.71%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

0.00 pp

From 0.71% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.71%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Theia

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

@theia1 product
  • console< 1.8.1
Eclipse1 product
The eclipse foundation1 product

3 vendors · 3 products

References

2 links