How severe is CVE-2021-21624?

CVE-2021-21624 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-2021-21624 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-2021-21624?

CVE-2021-21624 affects Jenkins Role-based Authorization Strategy. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-21624?

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

When was CVE-2021-21624 published?

CVE-2021-21624 was published on 2021-03-18 and last updated on 2026-06-17.

CVE-2021-21624

CVE-2021-21624 is a medium-severity vulnerability in Jenkins Role-based Authorization Strategy 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-863.

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
Weakness: CWE-863
Affected product: Jenkins Role-based Authorization Strategy
Published: 2021-03-18
Last modified: 2026-06-17

Description

An incorrect permission check in Jenkins Role-based Authorization Strategy Plugin 3.1 and earlier allows attackers with Item/Read permission on nested items to access them, even if they lack Item/Read permission for parent folders.

Frequently asked questions

What is CVE-2021-21624?: An incorrect permission check in Jenkins Role-based Authorization Strategy Plugin 3.1 and earlier allows attackers with Item/Read permission on nested items to access them, even if they lack Item/Read permission for parent folders.
How severe is CVE-2021-21624?: CVE-2021-21624 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-2021-21624 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-2021-21624?: CVE-2021-21624 affects Jenkins Role-based Authorization Strategy. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-21624?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-21624 published?: CVE-2021-21624 was published on 2021-03-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jenkins:role-based_authorization_strategy:*:*:*:*:*:jenkins:*:*

More vulnerabilities in Jenkins Role-based Authorization Strategy

CVE-2023-28668 — Critical (CVSS 9.8): Jenkins Role-based Authorization Strategy Plugin 587.v2872c41fa_e51 and earlier grants permissions even after they've…
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CVE-2017-1000090 — High (CVSS 8.8): Role-based Authorization Strategy Plugin was not requiring requests to its API be sent via POST, thereby opening itself…

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CVE-2026-33105 — Critical (CVSS 10.0): Improper authorization in Microsoft Azure Kubernetes Service allows an unauthorized attacker to elevate privileges over…
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