CVE-2023-1477Network attack vector

Unauthorized access via undisclosed authentication flaw

Published Apr 28, 2023 · Updated Mar 5, 2025

Improper authentication in HYPR Keycloak Authenticator Extension allows remote authenticated users to gain unauthorized access. HYPR has not published the affected authentication locus or the operation that mishandles attacker-controlled input. Affected releases are those before 7.10.2 and before 8.0.3, and exploitation requires high privileges over the network; HYPR has not disclosed the resulting actions.

CVSS severity7.2
High
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in HYPR Keycloak Authenticator Extension allows remote authenticated users to gain unauthorized access. HYPR has not published the affected authentication locus or the operation that mishandles attacker-controlled input. Affected releases are those before 7.10.2 and before 8.0.3, and exploitation requires high privileges over the network; HYPR has not disclosed the resulting actions.

The record

CVE
CVE-2023-1477
Published
Apr 28, 2023
Updated
Mar 5, 2025
Vendor
HYPR
Product
Keycloak Authenticator Extension
Classifications
CWE-287, CAPEC-114
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 2025Record 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=0 <7.10.2
  2. Affected versionversion=0 <8.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

HYPR · Keycloak Authenticator Extensionversion=0 <7.10.2; version=0 <8.0.3

Published CVSS scores

7.2HYPRCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Weakness, pattern, technique

CWE-287Improper Authentication
CAPEC-114Authentication Abuse

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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