CVE-2022-1996Public exploitNetwork attack vector

Cross-origin data access via regex domain matching

Published Jun 6, 2022 · Updated Aug 3, 2024

Authorization bypass in go-restful before 2.16.0 and go-restful/v3 before 3.8.0 allows remote attackers to read data via crafted origins. CrossOriginResourceSharing.isOriginAllowed compiles each AllowedDomains value as an unanchored regular expression and accepts any Origin containing a match. Exploitation requires an application to enable this CORS filter and a victim with access to protected data to visit an attacker-controlled page, which can read responses under the victim's browser credentials.

CVSS severity9.3
Critical
EPSS probability3.12%
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 go-restful before 2.16.0 and go-restful/v3 before 3.8.0 allows remote attackers to read data via crafted origins. CrossOriginResourceSharing.isOriginAllowed compiles each AllowedDomains value as an unanchored regular expression and accepts any Origin containing a match. Exploitation requires an application to enable this CORS filter and a victim with access to protected data to visit an attacker-controlled page, which can read responses under the victim's browser credentials.

The record

CVE
CVE-2022-1996
Published
Jun 6, 2022
Updated
Aug 3, 2024
Vendor
Ernest Micklei
Product
go-restful
Classifications
CWE-639, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 6, 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?

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

  1. Affected versionversion=unspecified <v3.8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ernest Micklei · go-restfulversion=unspecified <v3.8.0

Published CVSS scores

6.4NVDAV:N/AC:L/Au:N/C:P/I:P/A:N
9.3huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
9.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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.

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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

CWE-639Authorization Bypass Through User-Controlled Key
T1189Drive-by Compromise

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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