No exploitation reportedFix available

CVE-2021-42837

Q: Is CVE-2021-42837 actively exploited?

Active exploitation of CVE-2021-42837 has not been confirmed. Its EPSS score was 1.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-42837?

CVE-2021-42837 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2021-11-05
Fixed in7.3-20210930
WeaknessCWE-287

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An issue was discovered in Talend Data Catalog before 7.3-20210930. After setting up SAML/OAuth, authentication is not correctly enforced on the native login page. Any valid user from the SAML/OAuth provider can be used as the username with an arbitrary password, and login will succeed.

Timeline

dates in UTC

2021-11-0518:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-42837?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-42837?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Talend data catalog

Branch	Affected	Fixed in	Source
7.3	< 7.3-20210930	7.3-20210930	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Talend data catalog to 7.3-20210930

Advisories and patches

jira.talendforge.orgVendor Advisory
www.talend.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.19.8read 2026-10-23
NVDCVSS 2.07.5read 2026-10-23
NVDweakness (CWE)CWE-287read 2026-10-23
FIRST EPSSEPSS score1.2 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2021-11-05
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-42837?

Is CVE-2021-42837 actively exploited?

Active exploitation of CVE-2021-42837 has not been confirmed. Its EPSS score was 1.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-42837?

CVE-2021-42837 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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