8.1
HIGH CVSS 3.1
CVE-2020-26945
MyBatis Deserialization Object Stream Vulnerability
Description

MyBatis before 3.5.6 mishandles deserialization of object streams.

INFO

Published Date :

Oct. 10, 2020, 8:15 p.m.

Last Modified :

Nov. 21, 2024, 5:20 a.m.

Remotely Exploit :

Yes !
Affected Products

The following products are affected by CVE-2020-26945 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Mybatis mybatis
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
CVSS 3.1 HIGH [email protected]
Public PoC/Exploit Available at Github

CVE-2020-26945 has a 9 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-26945.

URL Resource
https://github.com/mybatis/mybatis-3/compare/mybatis-3.5.5...mybatis-3.5.6 Third Party Advisory
https://github.com/mybatis/mybatis-3/pull/2079 Patch Third Party Advisory
https://github.com/mybatis/mybatis-3/compare/mybatis-3.5.5...mybatis-3.5.6 Third Party Advisory
https://github.com/mybatis/mybatis-3/pull/2079 Patch Third Party Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-26945 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-26945 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

None

Java Python C++ C PLpgSQL JavaScript

Updated: 9 hours, 58 minutes ago
0 stars 0 fork 0 watcher
Born at : Aug. 18, 2025, 7:26 a.m. This repo has been linked 1 different CVEs too.

None

Java Python C++ C PLpgSQL JavaScript

Updated: 1 day, 3 hours ago
1 stars 0 fork 0 watcher
Born at : July 14, 2025, 9:54 a.m. This repo has been linked 1 different CVEs too.

None

Java Python C++ C PLpgSQL JavaScript

Updated: 1 day, 8 hours ago
2 stars 1 fork 1 watcher
Born at : July 2, 2025, 8:20 a.m. This repo has been linked 1 different CVEs too.

关于学习java安全的一些知识,正在学习中

Java Python C++ C PLpgSQL JavaScript

Updated: 1 month, 2 weeks ago
0 stars 0 fork 0 watcher
Born at : June 5, 2025, 8:24 a.m. This repo has been linked 1 different CVEs too.

None

SCSS Mustache

Updated: 1 year, 5 months ago
0 stars 0 fork 0 watcher
Born at : March 11, 2024, 8:53 a.m. This repo has been linked 52 different CVEs too.

安全类各家文库大乱斗

HTML CSS JavaScript Go Python Shell C

Updated: 11 hours, 12 minutes ago
1194 stars 286 fork 286 watcher
Born at : Feb. 15, 2022, 3:14 a.m. This repo has been linked 568 different CVEs too.

是一些比赛中的好题,加上自己出的一些。。。

ctf challenge

JavaScript PHP Dockerfile Java Shell Batchfile Hack Python

Updated: 5 months, 3 weeks ago
43 stars 3 fork 3 watcher
Born at : Dec. 22, 2020, 10:01 a.m. This repo has been linked 1 different CVEs too.

关于学习java安全的一些知识,正在学习中ing,欢迎fork and star

java

Java Python C++ C PLpgSQL

Updated: 4 weeks ago
781 stars 136 fork 136 watcher
Born at : Dec. 22, 2020, 9:31 a.m. This repo has been linked 1 different CVEs too.

None

Updated: 1 month, 1 week ago
407 stars 59 fork 59 watcher
Born at : Aug. 6, 2020, 3:29 a.m. This repo has been linked 3 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-26945 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-26945 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://github.com/mybatis/mybatis-3/compare/mybatis-3.5.5...mybatis-3.5.6
    Added Reference https://github.com/mybatis/mybatis-3/pull/2079
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Oct. 26, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:H/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://github.com/mybatis/mybatis-3/compare/mybatis-3.5.5...mybatis-3.5.6 No Types Assigned https://github.com/mybatis/mybatis-3/compare/mybatis-3.5.5...mybatis-3.5.6 Third Party Advisory
    Changed Reference Type https://github.com/mybatis/mybatis-3/pull/2079 No Types Assigned https://github.com/mybatis/mybatis-3/pull/2079 Patch, Third Party Advisory
    Added CWE NIST CWE-502
    Added CPE Configuration OR *cpe:2.3:a:mybatis:mybatis:*:*:*:*:*:*:*:* versions up to (excluding) 3.5.6
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 8.1
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 5.1
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.60 }} -0.64%

score

0.66771

percentile