How severe is CVE-2026-53439?

CVE-2026-53439 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-2026-53439 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-53439?

CVE-2026-53439 primarily affects Jenkins. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-53439?

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

Does CVE-2026-53439 have an EU (EUVD) identifier?

Yes. CVE-2026-53439 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36023.

When was CVE-2026-53439 published?

CVE-2026-53439 was published on 2026-06-10 and last updated on 2026-06-17.

CVE-2026-53439

CVE-2026-53439 is a medium-severity vulnerability in Jenkins 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)
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36023
Weakness: CWE-862
Affected product: Jenkins
Published: 2026-06-10
Last modified: 2026-06-17

Description

Missing permission checks in Jenkins 2.567 and earlier, LTS 2.555.2 and earlier allow attackers with Overall/Read permission to determine other users' configured timezone and to enumerate view names of other users' "My Views".

Frequently asked questions

What is CVE-2026-53439?: Missing permission checks in Jenkins 2.567 and earlier, LTS 2.555.2 and earlier allow attackers with Overall/Read permission to determine other users' configured timezone and to enumerate view names of other users' "My Views".
How severe is CVE-2026-53439?: CVE-2026-53439 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-2026-53439 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-53439?: CVE-2026-53439 primarily affects Jenkins. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-53439?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-53439 have an EU (EUVD) identifier?: Yes. CVE-2026-53439 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36023.
When was CVE-2026-53439 published?: CVE-2026-53439 was published on 2026-06-10 and last updated on 2026-06-17.

References

https://www.jenkins.io/security/advisory/2026-06-10/#SECURITY-3713

Affected products (2)

cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*
cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*

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Threat intelligence

Threat-intel indicators referencing this CVE:

125.212.235.194 (ipv4-addr)
220.95.208.142 (ipv4-addr)