CVE-2026-33494Network attack vector

Unauthenticated authorization bypass via unnormalized paths

Published Mar 26, 2026 · Updated Mar 26, 2026

Authorization bypass in Ory Oathkeeper before 26.2.0 allows remote attackers to reach protected upstream resources via crafted URLs. Rule.IsMatching evaluates the raw request path against access rules without first normalizing dot segments, so a permissive rule can authorize a path that the upstream server resolves to a protected route. Exploitation requires a permissive prefix rule and downstream path normalization; successful requests can read or alter resources permitted by the protected route.

CVSS severity10.0
Critical
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Ory Oathkeeper before 26.2.0 allows remote attackers to reach protected upstream resources via crafted URLs. Rule.IsMatching evaluates the raw request path against access rules without first normalizing dot segments, so a permissive rule can authorize a path that the upstream server resolves to a protected route. Exploitation requires a permissive prefix rule and downstream path normalization; successful requests can read or alter resources permitted by the protected route.

The record

CVE
CVE-2026-33494
Published
Mar 26, 2026
Updated
Mar 26, 2026
Vendor
Ory
Product
Ory Oathkeeper
Classifications
CWE-23, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 26.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ory · Ory Oathkeeperversion=< 26.2.0

Published CVSS scores

10.0GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-23Relative Path Traversal
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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