How severe is CVE-2026-42520?

CVE-2026-42520 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-42520 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-42520?

CVE-2026-42520 affects Jenkins Credentials Binding. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-42520?

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

Does CVE-2026-42520 have an EU (EUVD) identifier?

Yes. CVE-2026-42520 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26221.

When was CVE-2026-42520 published?

CVE-2026-42520 was published on 2026-04-29 and last updated on 2026-06-17.

CVE-2026-42520

CVE-2026-42520 is a high-severity vulnerability in Jenkins Credentials Binding with a CVSS 3.x base score of 7.5. 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-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26221
Weakness: CWE-22
Affected product: Jenkins Credentials Binding
Published: 2026-04-29
Last modified: 2026-06-17

Description

Jenkins Credentials Binding Plugin 719.v80e905ef14eb_ and earlier does not sanitize file names for file and zip file credentials, allowing attackers able to provide credentials to a job to write files to arbitrary locations on the node filesystem, which can lead to remote code execution if Jenkins is configured to allow a low-privileged user to configure file or zip file credentials used for a job running on the built-in node.

Frequently asked questions

What is CVE-2026-42520?: Jenkins Credentials Binding Plugin 719.v80e905ef14eb_ and earlier does not sanitize file names for file and zip file credentials, allowing attackers able to provide credentials to a job to write files to arbitrary locations on the node filesystem, which can lead to remote code execution if Jenkins is configured to allow a low-privileged user to configure file or zip file credentials used for a job running on the built-in node.
How severe is CVE-2026-42520?: CVE-2026-42520 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-42520 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-42520?: CVE-2026-42520 affects Jenkins Credentials Binding. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-42520?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-42520 have an EU (EUVD) identifier?: Yes. CVE-2026-42520 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26221.
When was CVE-2026-42520 published?: CVE-2026-42520 was published on 2026-04-29 and last updated on 2026-06-17.

References

https://www.jenkins.io/security/advisory/2026-04-29/#SECURITY-3672

Affected products (1)

cpe:2.3:a:jenkins:credentials_binding:*:*:*:*:*:jenkins:*:*

More vulnerabilities in Jenkins Credentials Binding

CVE-2026-48922 — High (CVSS 7.5): Jenkins Credentials Binding Plugin 720.v3f6decef43ea_ and earlier does not properly sanitize file names for file and…
CVE-2025-53650 — High (CVSS 7.3): Jenkins Credentials Binding Plugin 687.v619cb_15e923f and earlier does not properly mask (i.e., replace with asterisks)…
CVE-2020-2181 — Medium (CVSS 6.5): Jenkins Credentials Binding Plugin 1.22 and earlier does not mask (i.e., replace with asterisks) secrets in the build…
CVE-2019-1010241 — Medium (CVSS 6.5): Jenkins Credentials Binding Plugin Jenkins 1.17 is affected by: CWE-257: Storing Passwords in a Recoverable Format. The…
CVE-2022-20616 — Medium (CVSS 4.3): Jenkins Credentials Binding Plugin 1.27 and earlier does not perform a permission check in a method implementing form…
CVE-2020-2182 — Medium (CVSS 4.3): Jenkins Credentials Binding Plugin 1.22 and earlier does not mask (i.e., replace with asterisks) secrets containing a…

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