CVE-2020-23356

Name: CVE-2020-23356
Creator: NVD / NIST
Published: 2021-01-27T16:15:12.95+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.98%

Last modified Jun 17, 2026

CVE-2020-23356 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. dmin/kernel/api/login.class.phpin in nibbleblog v3.7.1c allows type juggling for login bypass because == is used instead of === for password hashes, which mishandles hashes that begin with 0e followed by exclusively numerical characters.. EPSS estimates a 0.98% chance of exploitation in the next 30 days.

Description

dmin/kernel/api/login.class.phpin in nibbleblog v3.7.1c allows type juggling for login bypass because == is used instead of === for password hashes, which mishandles hashes that begin with 0e followed by exclusively numerical characters.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

0.98%

57.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Nibbleblog	Nibbleblog	3.7.1c

References

https://github.com/dignajar/nibbleblog/pull/148Third Party Advisory
https://github.com/dignajar/nibbleblog/pull/148Third Party Advisory

Timeline

Published: Jan 27, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-23356?

How severe is CVE-2020-23356?

CVE-2020-23356 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.98% probability of exploitation in the next 30 days.

How do I fix CVE-2020-23356?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-23356?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST