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CVE-2021-26291 Apache Maven

Affected softwareApache Maven
Severity9.1 Critical CVSS 3.1 2 scores
Fixed in3.8.1
WeaknessCWE-346
Published23 Apr 2021
Updated17 Jun 2026

Description

Apache Maven will follow repositories that are defined in a dependency’s Project Object Model (pom) which may be surprising to some users, resulting in potential risk if a malicious actor takes over that repository or is able to insert themselves into a position to pretend to be that repository. Maven is changing the default behavior in 3.8.1+ to no longer follow http (non-SSL) repository references by default. More details available in the referenced urls. If you are currently using a repository manager to govern the repositories used by your builds, you are unaffected by the risks present in the legacy behavior, and are unaffected by this vulnerability and change to default behavior. See this link for more information about repository management: https://maven.apache.org/repository-management.html

Exploitation status

No public exploit

No exploit has been reported in the sources we check. The 1 repository below are public GitHub repositories with fewer than 5 stars.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC 1 indexed, none at 5+ stars
  • EPSS 8.7% chance in 30 days

1 of these are GitHub repositories with fewer than 5 stars. They are listed for reference and don't count toward the exploitation status above.

IndexArtifactStarsFirst seen
GitHub PoC Context of CVE-2021-26291 minimal replicator 2025-02-19

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

  • Protection none
  • Action not pursued none
  • Review human Researcher
  • Record active
Decided by Manual classification of this CVE in the legacy dataset
Finding A manual classification set this CVE's status to Outside Waratek scope, but the CVE names a tracked product.

CVSS

9.1 CRITICAL v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 9.1 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N NVD Primary published
CVSS 2.0 6.4 none AV:N/AC:L/Au:N/C:P/I:P/A:N NVD Primary

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update July 2022 ↗ CPU 2022-Q3 Oracle Fusion Middleware / Centralized Third Party Jars (Apache Maven) (12.2.1.3.0, 12.2.1.4.0)
Oracle Critical Patch Update April 2022 ↗ CPU 2022-Q2 Oracle GoldenGate / General (Apache Maven) (Prior to 23.1)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle Fusion Middleware Centralized Third Party Jars (Apache Maven) 12.2.1.3.0, 12.2.1.4.0 12.2.1.3.0 · 12.2.1.4.0
Oracle GoldenGate General (Apache Maven) Prior to 23.1

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.apache.maven:maven-compat 0 3.8.1 unbounded
org.apache.maven:maven-core 0 3.8.1 unbounded

Products and versions

6 products, 7 version entries
SourceVendorProductSchemeAffected versions
nvd apache maven generic < 3.8.1
nvd oracle financial services analytical applications infrastructure generic ≥ 8.0.6.0.0 and ≤ 8.0.9.0.0 · ≥ 8.1.0.0.0 and ≤ 8.1.2.0
nvd oracle goldengate big data and application adapters generic 23.1
osv org.apache.maven maven-compat generic < 3.8.1
osv org.apache.maven maven-core generic < 3.8.1
nvd quarkus quarkus generic < 1.13.5

References

URLTags
https://github.com/apache/maven/commit/899465aeec03753ea91e15a79579eab76369c016 WEB
https://github.com/apache/maven/commit/fa79cb22e456cc65522b5bab8c4240fe08c5775f WEB
https://lists.apache.org/thread.html/r77af3ac7c3bfbd5454546e13faf7aec21d627bdcf36c9ca240436b94@%3Cissues.karaf.apache.org%3E WEB
https://lists.apache.org/thread.html/r78fb6d2cf0ca332cfa43abd4471e75fa6c517ed9cdfcb950bff48d40@%3Cjira.kafka.apache.org%3E WEB
https://lists.apache.org/thread.html/r86aebd0387ae19b740b3eb28bad83fe6aceca0d6257eaa810a6e0002@%3Ccommits.kafka.apache.org%3E WEB
https://lists.apache.org/thread.html/r86e1c81e03f441855f127980e9b3d41939d04a7caea2b7ab718e2288@%3Cjira.kafka.apache.org%3E WEB
https://lists.apache.org/thread.html/r96cc126d3ee9aa42af9d3bb4baa94828b0a5f656584a50dcc594125f@%3Cissues.karaf.apache.org%3E WEB
https://lists.apache.org/thread.html/r9a027668558264c4897633e66bcb7784099fdec9f9b22c38c2442f00%40%3Cusers.maven.apache.org%3E WEB
https://lists.apache.org/thread.html/r9a027668558264c4897633e66bcb7784099fdec9f9b22c38c2442f00@%3Cusers.maven.apache.org%3E WEB
https://lists.apache.org/thread.html/ra88a0eba7f84658cefcecc0143fd8bbad52c229ee5dfcbfdde7b6457@%3Cdev.jena.apache.org%3E WEB

Timeline

Published2021-04-23By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.