High severity · published Jul 17, 2026
CVE-2026-50197
Skipper: opaAuthorizeRequestWithBody filter bypasses OPA policy on Transfer-Encoding: chunked / HTTP/2 requests
7.8
CVSS
0.5%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SK
skipper · zalando
< 0.26.10 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-50197
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-50197
github.com
https://github.com/zalando/skipper/commit/3152f3b0bb52ca89c3564be42434db0a2a1cea23
github.com
https://github.com/zalando/skipper/pull/4041
github.com
https://github.com/zalando/skipper/releases/tag/v0.26.10
github.com
https://github.com/zalando/skipper/security/advisories/GHSA-659f-rgp5-w4wf
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