CVE-2020-23352Network attack vector

Authentication bypass via loose password comparison

Published Jan 27, 2021 · Updated Aug 4, 2024

Authentication bypass in Z-BlogPHP 1.6.0 Valyria allows remote attackers to open password-protected articles with a crafted password. The passwordvisit_input_password function compares the POSTed password with the article's stored password using PHP loose equality, allowing type juggling with magic-hash values to produce a false match. The passwordvisit plugin must protect the requested article; a successful bypass grants access to that article without its valid password.

CVSS severity7.5
High
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Z-BlogPHP 1.6.0 Valyria allows remote attackers to open password-protected articles with a crafted password. The passwordvisit_input_password function compares the POSTed password with the article's stored password using PHP loose equality, allowing type juggling with magic-hash values to produce a false match. The passwordvisit plugin must protect the requested article; a successful bypass grants access to that article without its valid password.

The record

CVE
CVE-2020-23352
Published
Jan 27, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 27, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:P/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 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 exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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