CVE-2023-33561Public exploitNetwork attack vector

Weak passwords via bypassed complexity validation

Published Aug 1, 2023 · Updated Oct 21, 2024

Improper password validation in PHPJabbers Time Slots Booking Calendar 3.3 allows remote authenticated users to set one-character passwords. The account password-change handler accepts a modified HTTP password parameter without enforcing the advertised complexity rules server-side. Authenticated account access and request interception are required; the direct consequence is acceptance of a weak account password.

CVSS severityUnavailable
Unscored
EPSS probability0.99%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper password validation in PHPJabbers Time Slots Booking Calendar 3.3 allows remote authenticated users to set one-character passwords. The account password-change handler accepts a modified HTTP password parameter without enforcing the advertised complexity rules server-side. Authenticated account access and request interception are required; the direct consequence is acceptance of a weak account password.

The record

CVE
CVE-2023-33561
Published
Aug 1, 2023
Updated
Oct 21, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

No CVSS assessment is available in this record.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

No sourced classifications are available.

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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