CVE-2026-25705
CVE-2026-25705 is a high-severity vulnerability with a CVSS 3.x base score of 8.4. 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-35.
Key facts
- Severity: High (CVSS 3.x base score 8.4)
- EPSS exploit prediction: 0% (29th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-29915
- Weakness: CWE-35
- Published:
- Last modified:
Description
A vulnerability has been identified in [Rancher's Extensions](https://ranchermanager.docs.rancher.com/integrations-in-rancher/rancher-extensions) where malicious code can be injected in Rancher through a path traversal in the `compressedEndpoint` field inside a `UIPlugin` deployment. A malicious UI extension could abuse that to: * Overwrite Rancher binaries or configuration to inject code. * Write to /var/lib/rancher/ to tamper with cluster state. * If hostPath volumes are mounted, write to the host node filesystem. * Use this issue to chain with other attack vectors.
Frequently asked questions
- What is CVE-2026-25705?
- A vulnerability has been identified in [Rancher's Extensions](https://ranchermanager.docs.rancher.com/integrations-in-rancher/rancher-extensions) where malicious code can be injected in Rancher through a path traversal in the `compressedEndpoint` field inside a `UIPlugin` deployment. A malicious UI extension could abuse that to: * Overwrite Rancher binaries or configuration to inject code. * Write to /var/lib/rancher/ to tamper with cluster state. * If hostPath volumes are mounted, write to the host node filesystem. * Use this issue to chain with other attack vectors.
- How severe is CVE-2026-25705?
- CVE-2026-25705 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-25705 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-25705?
- 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-2026-25705 have an EU (EUVD) identifier?
- Yes. CVE-2026-25705 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29915.
- When was CVE-2026-25705 published?
- CVE-2026-25705 was published on 2026-05-13 and last updated on 2026-06-17.
References
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-25705
- https://github.com/rancher/rancher/security/advisories/GHSA-5v3h-x4wf-5c35
Other CWE-35 vulnerabilities
- CVE-2025-59793 — Critical (CVSS 9.9): Rocket TRUfusion Enterprise through 7.10.5 exposes the endpoint at /axis2/services/WsPortalV6UpDwAxis2Impl to…
- CVE-2026-6074 — Critical (CVSS 9.8): Intrado 911 Emergency Gateway (EGW) 5.x, 6.x, and 7.x contain a path traversal vulnerability in the…
- CVE-2025-41723 — Critical (CVSS 9.8): The importFile SOAP method is vulnerable to a directory traversal attack. An unauthenticated remote attacker bypass the…
- CVE-2025-42937 — Critical (CVSS 9.8): SAP Print Service (SAPSprint) performs insufficient validation of path information provided by users. An…
- CVE-2025-30515 — Critical (CVSS 9.8): CyberData 011209 Intercom could allow an authenticated attacker to upload arbitrary files to multiple locations…
- CVE-2026-52703 — Critical (CVSS 9.6): Unauthenticated Path Traversal in FastDup <= 2.7.2 versions.