CVE-2022-40482Public exploitNetwork attack vector

User enumeration via early authentication return

Published Apr 25, 2023 · Updated Feb 3, 2025

Timing side channel in Laravel Framework 8 before 8.83.24 and 9 before 9.32.0 allows remote attackers to enumerate registered users. SessionGuard::hasValidCredentials skips credential validation and validation-event work when no user is found, producing a shorter response than for an existing account. Exploitation requires an HTTP/2 login endpoint and paired multiplexed requests; exposed account identifiers can support password attacks.

CVSS severity5.3
Medium
EPSS probability0.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Timing side channel in Laravel Framework 8 before 8.83.24 and 9 before 9.32.0 allows remote attackers to enumerate registered users. SessionGuard::hasValidCredentials skips credential validation and validation-event work when no user is found, producing a shorter response than for an existing account. Exploitation requires an HTTP/2 login endpoint and paired multiplexed requests; exposed account identifiers can support password attacks.

The record

CVE
CVE-2022-40482
Published
Apr 25, 2023
Updated
Feb 3, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-203, T1589
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 25, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 3, 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?

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

5.3CISACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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 exploitPublished

Weakness, pattern, technique

CWE-203Observable Discrepancy
T1589Gather Victim Identity Information

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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