How severe is CVE-2021-42837?

CVE-2021-42837 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-42837 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-42837?

CVE-2021-42837 affects Talend Data Catalog. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-42837?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-42837 published?

CVE-2021-42837 was published on 2021-11-05 and last updated on 2026-06-17.

CVE-2021-42837

CVE-2021-42837 is a critical-severity vulnerability in Talend Data Catalog with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Talend Data Catalog
Published: 2021-11-05
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-42837?: 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.
How severe is CVE-2021-42837?: CVE-2021-42837 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-42837 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-42837?: CVE-2021-42837 affects Talend Data Catalog. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-42837?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-42837 published?: CVE-2021-42837 was published on 2021-11-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:talend:data_catalog:*:*:*:*:*:*:*:*

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