How severe is CVE-2021-21645?

CVE-2021-21645 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-21645 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-21645?

CVE-2021-21645 affects Jenkins Config File Provider. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-21645?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-21645 published?

CVE-2021-21645 was published on 2021-04-21 and last updated on 2026-06-17.

CVE-2021-21645

CVE-2021-21645 is a medium-severity vulnerability in Jenkins Config File Provider with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Jenkins Config File Provider
Published: 2021-04-21
Last modified: 2026-06-17

Description

Jenkins Config File Provider Plugin 3.7.0 and earlier does not perform permission checks in several HTTP endpoints, attackers with Overall/Read permission to enumerate configuration file IDs.

Frequently asked questions

What is CVE-2021-21645?: Jenkins Config File Provider Plugin 3.7.0 and earlier does not perform permission checks in several HTTP endpoints, attackers with Overall/Read permission to enumerate configuration file IDs.
How severe is CVE-2021-21645?: CVE-2021-21645 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-21645 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-21645?: CVE-2021-21645 affects Jenkins Config File Provider. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-21645?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-21645 published?: CVE-2021-21645 was published on 2021-04-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jenkins:config_file_provider:*:*:*:*:*:jenkins:*:*

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