CVE-2023-53943Public exploitNetwork attack vectorHinoki check available

Email-address enumeration via distinguishable reset responses

Published Dec 18, 2025 · Updated Dec 18, 2025

Username enumeration in GLPI 9.5.7 allows remote attackers to validate registered email addresses through the lost-password endpoint. The endpoint returns distinguishable response text after a CSRF-protected email submission, revealing whether the address belongs to an account. No authentication is required; each valid-address probe triggers a password-reset email and provides an account identity for follow-on attacks.

CVSS severity6.9
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Username enumeration in GLPI 9.5.7 allows remote attackers to validate registered email addresses through the lost-password endpoint. The endpoint returns distinguishable response text after a CSRF-protected email submission, revealing whether the address belongs to an account. No authentication is required; each valid-address probe triggers a password-reset email and provides an account identity for follow-on attacks.

The record

CVE
CVE-2023-53943
Published
Dec 18, 2025
Updated
Dec 18, 2025
Vendor
GLPI Project
Product
GLPI
Classifications
CWE-203, T1589.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 18, 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=9.5.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GLPI Project · GLPIversion=9.5.7

Published CVSS scores

6.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA: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-203Observable Discrepancy
T1589.002Gather Victim Identity Information: Email Addresses

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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