CVE-2026-50197

high

Description

Skipper is an HTTP router and reverse proxy for service composition. Prior to 0.26.10, zalando/skipper's OpenPolicyAgent integration silently bypasses request-body inspection on HTTP/1.1 Transfer-Encoding: chunked and HTTP/2 requests that omit the content-length pseudo-header, because the opaAuthorizeRequestWithBody filter and OpenPolicyAgentInstance.ExtractHttpBodyOptionally in filters/openpolicyagent/openpolicyagent.go produce an empty raw_body and input.parsed_body while the upstream service receives the full attacker-controlled body. This issue is fixed in version 0.26.10.

References

https://github.com/zalando/skipper/security/advisories/GHSA-659f-rgp5-w4wf

https://github.com/zalando/skipper/releases/tag/v0.26.10

https://github.com/zalando/skipper/pull/4041

https://github.com/zalando/skipper/commit/3152f3b0bb52ca89c3564be42434db0a2a1cea23

Details

Source: Mitre, NVD

Published: 2026-07-17

Updated: 2026-07-23

Risk Information

CVSS v2

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 10

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Severity: Critical

CVSS v4

Base Score: 7.8

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N

Severity: High

EPSS

EPSS: 0.0055