Missing Authorization Affecting github.com/ory/oathkeeper/proxy package, versions <26.2.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published24 Mar 2026
- disclosed20 Mar 2026
- creditUnknown
Introduced: 20 Mar 2026
CVE-2026-33495 Â (opens in a new tab)How to fix?
Upgrade github.com/ory/oathkeeper/proxy to version 26.2.0 or higher.
Overview
github.com/ory/oathkeeper/proxy is an Identity & Access Proxy (IAP) and Access Control Decision API that authorizes HTTP requests based on sets of Access Rules
Affected versions of this package are vulnerable to Missing Authorization in the evaluation of the X-Forwarded-Proto header due to improperly respecting the serve.proxy.trust_forwarded_headers configuration. An attacker can gain unauthorized access or bypass access restrictions by sending crafted requests with manipulated X-Forwarded-Proto headers to trigger alternate rule sets.
Note:
This is only exploitable if the deployment has distinct rules for HTTP and HTTPS requests and the attacker can trigger one but not the other rule.
Workaround
This vulnerability can be mitigated by dropping unexpected headers as early as possible when a request is handled, such as in a WAF.