CVE-2020-23360Public exploitNetwork attack vector

Account validation bypass via PHP loose comparison

Published Jan 27, 2021 · Updated Aug 4, 2024

Incorrect comparison in osCommerce 2.3.4.1 allows remote attackers to bypass username and password rechecks with magic strings. The affected account and administrator workflows use PHP's loose equality operator, which treats different numeric-looking strings such as 0e11111 and 0e22222 as equal. Supplying these values during account creation, password reset, or administrator operations lets a mismatched confirmation value pass validation.

CVSS severity9.8
Critical
EPSS probability1.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect comparison in osCommerce 2.3.4.1 allows remote attackers to bypass username and password rechecks with magic strings. The affected account and administrator workflows use PHP's loose equality operator, which treats different numeric-looking strings such as 0e11111 and 0e22222 as equal. Supplying these values during account creation, password reset, or administrator operations lets a mismatched confirmation value pass validation.

The record

CVE
CVE-2020-23360
Published
Jan 27, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-697
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 NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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.

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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-697Incorrect Comparison

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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