RCE in Perspective-Dev Perspective
CVE-2026-67195
Perspective 5.0.0 contains a remote code execution vulnerability that allows unauthenticated attackers to execute arbitrary operating system commands by submitting crafted expression strings to the PolarsVirtualServer backend, which passes client-supplied input directly to Python's eval() with only __builtins__={} cleared. Attackers can exploit Python object attribute traversal through the interpreter's loaded class list to reach subprocess.Popen via a TableValidateExprReq or TableMakeViewReq protobuf message, achieving arbitrary command execution in the Perspective host process.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.012 (68.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Perspective-Dev Perspective — versions 0
Weakness classification (CWE)
References
- christbowel.com/blog/perspective-5-0-0-five-cves/ (technical-description, exploit)
- www.vulncheck.com/advisories/perspective-rce-via-eval-expression-injection (third-party-advisory)
Frequently asked questions
- What is CVE-2026-67195?
- CVE-2026-67195 is a high-severity vulnerability in Perspective-Dev Perspective, classified under Eval Injection. CVSS score: 8.8/10. Published 2026-08-04.
- How severe is CVE-2026-67195?
- High severity. CVSS v3 base score is 8.8 out of 10.