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CVE-2021-4311

29
FAUCET Score

CVE-2021-4311 is a critical XML External Entity (XXE) vulnerability affecting Talend Open Studio for MDM, specifically within its XML Handler component. This flaw allows an unauthenticated attacker to remotely execute arbitrary code, access sensitive data, or cause denial of service due to its high impact on confidentiality, integrity, and availability. While rated as critical with a CVSS score of 9.8, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 20230102_1935CPE matchmatch criteria
cpe:2.3:a:talend:open_studio:*:*:*:*:*:mdm:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.1
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.67%
Probability of exploitation in next 30 days
EPSS Percentile
48.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0067 is in the 30th percentile among its peer group of 36,897 CVEs.

Social Chatter

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.

Media 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

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / Talend/tmdm-server-se/commit/31d442b9fb1d518128fd18f6e4d54e06c3d67793
Patch
github.com / Talend/tmdm-server-se/pull/1420
Patch
vuldb.com
Third Party Advisory
vuldb.com
Third Party Advisory