CVE-2022-34296Public exploitNetwork attack vector

Route selection bypass via malformed query acceptance

Published Jun 22, 2022 · Updated Aug 3, 2024

Improper query validation in Zalando Skipper before 0.13.218 allows remote attackers to bypass query predicates via malformed requests. Skipper routed RawQuery values without first rejecting strings that net/url.ParseQuery treats as invalid, so QueryParam ignored a semicolon-terminated parameter. No authentication or user interaction is required, and the crafted query selects a fallback route instead of the route intended for the named parameter.

CVSS severity7.5
High
EPSS probability1.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper query validation in Zalando Skipper before 0.13.218 allows remote attackers to bypass query predicates via malformed requests. Skipper routed RawQuery values without first rejecting strings that net/url.ParseQuery treats as invalid, so QueryParam ignored a semicolon-terminated parameter. No authentication or user interaction is required, and the crafted query selects a fallback route instead of the route intended for the named parameter.

The record

CVE
CVE-2022-34296
Published
Jun 22, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.0NIST National Vulnerability DatabaseAV:N/AC:L/Au:N/C:N/I:P/A:N
7.5GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
7.5NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

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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