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Vulnerability Details :

CVE-2026-50197

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-17 Jul, 2026 | 19:23
Updated At-20 Jul, 2026 | 14:33
Rejected At-
Credits

Skipper: opaAuthorizeRequestWithBody filter bypasses OPA policy on Transfer-Encoding: chunked / HTTP/2 requests

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:17 Jul, 2026 | 19:23
Updated At:20 Jul, 2026 | 14:33
Rejected At:
▼CVE Numbering Authority (CNA)
Skipper: opaAuthorizeRequestWithBody filter bypasses OPA policy on Transfer-Encoding: chunked / HTTP/2 requests

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.

Affected Products
Vendor
zalando
Product
skipper
Versions
Affected
  • < 0.26.10
Problem Types
TypeCWE IDDescription
CWECWE-444CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Type: CWE
CWE ID: CWE-444
Description: CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Metrics
VersionBase scoreBase severityVector
4.07.8HIGH
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
Version: 4.0
Base score: 7.8
Base severity: HIGH
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
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/zalando/skipper/security/advisories/GHSA-659f-rgp5-w4wf
x_refsource_CONFIRM
https://github.com/zalando/skipper/pull/4041
x_refsource_MISC
https://github.com/zalando/skipper/commit/3152f3b0bb52ca89c3564be42434db0a2a1cea23
x_refsource_MISC
https://github.com/zalando/skipper/releases/tag/v0.26.10
x_refsource_MISC
Hyperlink: https://github.com/zalando/skipper/security/advisories/GHSA-659f-rgp5-w4wf
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/zalando/skipper/pull/4041
Resource:
x_refsource_MISC
Hyperlink: https://github.com/zalando/skipper/commit/3152f3b0bb52ca89c3564be42434db0a2a1cea23
Resource:
x_refsource_MISC
Hyperlink: https://github.com/zalando/skipper/releases/tag/v0.26.10
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/zalando/skipper/security/advisories/GHSA-659f-rgp5-w4wf
exploit
Hyperlink: https://github.com/zalando/skipper/security/advisories/GHSA-659f-rgp5-w4wf
Resource:
exploit
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:17 Jul, 2026 | 20:17
Updated At:20 Jul, 2026 | 16:17

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.07.8HIGH
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
N/A
Type: Secondary
Version: 4.0
Base score: 7.8
Base severity: HIGH
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-444Secondarysecurity-advisories@github.com
CWE ID: CWE-444
Type: Secondary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/zalando/skipper/commit/3152f3b0bb52ca89c3564be42434db0a2a1cea23security-advisories@github.com
N/A
https://github.com/zalando/skipper/pull/4041security-advisories@github.com
N/A
https://github.com/zalando/skipper/releases/tag/v0.26.10security-advisories@github.com
N/A
https://github.com/zalando/skipper/security/advisories/GHSA-659f-rgp5-w4wfsecurity-advisories@github.com
N/A
https://github.com/zalando/skipper/security/advisories/GHSA-659f-rgp5-w4wf134c704f-9b21-4f2e-91b3-4a467353bcc0
N/A
Hyperlink: https://github.com/zalando/skipper/commit/3152f3b0bb52ca89c3564be42434db0a2a1cea23
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/zalando/skipper/pull/4041
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/zalando/skipper/releases/tag/v0.26.10
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/zalando/skipper/security/advisories/GHSA-659f-rgp5-w4wf
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/zalando/skipper/security/advisories/GHSA-659f-rgp5-w4wf
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource: N/A

Change History

0
Information is not available yet

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