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CVE-2020-26945

27
FAUCET Score

CVE-2020-26945 describes a critical deserialization vulnerability in MyBatis versions prior to 3.5.6. This flaw allows an unauthenticated attacker to achieve remote code execution (RCE) with high impact on confidentiality, integrity, and availability, given the high attack complexity. Although rated with a CVSS score of 8.1 (High), there is currently no public exploit code available, no evidence of active exploitation, and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.5.6CPE matchmatch criteria
cpe:2.3:a:mybatis:mybatis:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.82%
Probability of exploitation in next 30 days
EPSS Percentile
76.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0182 is in the 34th percentile among its peer group of 8,915 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
mavenpatch availablevia ghsa
Product: org.mybatis:mybatisFixed in: 3.5.6
redhatpatch availablevia redhat_api
Product: Red Hat Fuse 7.9Fixed in: mybatis
View patch

Vendor Advisories (2)

mavenGHSA-qq48-m4jx-xqh8high

"Deserialization errors in MyBatis"

Apr 22, 2021
redhatCVE-2020-26945Moderate

mybatis: mishandles deserialization of object streams which could result in remote code execution

Oct 10, 2020

References

github.com / mybatis/mybatis-3/compare/mybatis-3.5.5...mybatis-3.5.6
Third Party Advisory
github.com / mybatis/mybatis-3/pull/2079
PatchThird Party Advisory