How severe is CVE-2021-21676?

CVE-2021-21676 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 none, integrity low, and availability none.

Is CVE-2021-21676 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-21676?

CVE-2021-21676 affects Jenkins Requests. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-21676?

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

When was CVE-2021-21676 published?

CVE-2021-21676 was published on 2021-06-30 and last updated on 2026-06-17.

CVE-2021-21676

CVE-2021-21676 is a medium-severity vulnerability in Jenkins Requests 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. The underlying weakness is classified as CWE-862.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Jenkins Requests
Published: 2021-06-30
Last modified: 2026-06-17

Description

Jenkins requests-plugin Plugin 2.2.7 and earlier does not perform a permission check in an HTTP endpoint, allowing attackers with Overall/Read permission to send test emails to an attacker-specified email address.

Frequently asked questions

What is CVE-2021-21676?: Jenkins requests-plugin Plugin 2.2.7 and earlier does not perform a permission check in an HTTP endpoint, allowing attackers with Overall/Read permission to send test emails to an attacker-specified email address.
How severe is CVE-2021-21676?: CVE-2021-21676 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 none, integrity low, and availability none.
Is CVE-2021-21676 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-21676?: CVE-2021-21676 affects Jenkins Requests. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-21676?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-21676 published?: CVE-2021-21676 was published on 2021-06-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jenkins:requests:*:*:*:*:*:jenkins:*:*

More vulnerabilities in Jenkins Requests

CVE-2021-21675 — Medium (CVSS 6.5): A cross-site request forgery (CSRF) vulnerability in Jenkins requests-plugin Plugin 2.2.12 and earlier allows attackers…
CVE-2022-34782 — Medium (CVSS 4.3): An incorrect permission check in Jenkins requests-plugin Plugin 2.2.16 and earlier allows attackers with Overall/Read…
CVE-2021-21674 — Medium (CVSS 4.3): A missing permission check in Jenkins requests-plugin Plugin 2.2.6 and earlier allows attackers with Overall/Read…

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