SEPTEMBER 17, 2026
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Case File

CVE-2026-65838

HIGH · CVSS 8.2 EPSS 0.27% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-14 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

The opaAuthorizeRequestWithBody filter in Skipper prior to version 0.27.35 is vulnerable to bypassing Rego policies due to mishandling oversized Content-Length requests, potentially allowing unauthorized payloads to reach protected services. This flaw primarily impacts deployments that rely on request-body content authorization and exceed the default maximum request body size of 1 MB. Organizations utilizing Skipper for HTTP routing and service composition should prioritize upgrading to version 0.27.35 to mitigate this high-severity vulnerability.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

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CVE
CVE-2026-65838
Severity
HIGH
CVSS
8.2
EPSS
0.27%

Original NVD Description

Skipper is an HTTP router and reverse proxy for service composition. Prior to 0.27.35, the opaAuthorizeRequestWithBody filter in filters/openpolicyagent/openpolicyagent.go can allow an oversized declared Content-Length request to bypass a deny-on-presence Rego policy because ExtractHttpBodyOptionally leaves OPA with an empty parsed_body while forwarding the complete request body upstream. This incomplete remediation of CVE-2026-50197 affects deployments that authorize request-body content and exceed -open-policy-agent-max-request-body-size, which defaults to 1 MB. Policy logic that does not reject input.attributes.request.http.truncated_body can therefore fail open and permit a forbidden payload to reach the protected service, while small bodies and the previously fixed chunked-body case are evaluated normally. This issue is fixed in version 0.27.35.