CVE-2026-34965
CVE-2026-34965 is a high-severity vulnerability with a CVSS 3.x base score of 8.8. 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-94.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v4: 8.7
- EPSS exploit prediction: 1% (53rd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-26280
- Weakness: CWE-94
- Published:
- Last modified:
Description
Cockpit CMS contains an authenticated remote code execution vulnerability in the /cockpit/collections/save_collection endpoint that allows authenticated attackers with collection management privileges to inject arbitrary PHP code into collection rules parameters. Attackers can inject malicious PHP code through rule parameters which is written directly to server-side PHP files and executed via include() to achieve arbitrary command execution on the underlying server.
Frequently asked questions
- What is CVE-2026-34965?
- Cockpit CMS contains an authenticated remote code execution vulnerability in the /cockpit/collections/save_collection endpoint that allows authenticated attackers with collection management privileges to inject arbitrary PHP code into collection rules parameters. Attackers can inject malicious PHP code through rule parameters which is written directly to server-side PHP files and executed via include() to achieve arbitrary command execution on the underlying server.
- How severe is CVE-2026-34965?
- CVE-2026-34965 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-34965 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-34965?
- 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-2026-34965 have an EU (EUVD) identifier?
- Yes. CVE-2026-34965 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26280.
- When was CVE-2026-34965 published?
- CVE-2026-34965 was published on 2026-04-29 and last updated on 2026-06-17.
References
- https://gist.github.com/thepiyushkumarshukla/64d2318518b17f529bc3ccb11fd5be90
- https://github.com/agentejo/cockpit
- https://github.com/agentejo/cockpit/commits/494765e4f0fb9484f320aee0c6ee889b6fa789b9
- https://www.vulncheck.com/advisories/cockpit-cms-authenticated-remote-code-execution-via-collections
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