9.1

CVE-2021-26291: block repositories using http by default

Modified
AliasesMGASA-2023-0230UBUNTU-CVE-2021-26291USN-5245-1
Published 23-04-2021Last modified 03-08-2024

Vulnerability summary

CVE-2021-26291 is a critical (CVSS 9.1) Origin Validation Error vulnerability in apache software foundation apache maven. EPSS estimates a 8.69% chance of exploitation in the next 30 days, higher than 95.1% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (reference, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
9.1/10
010
Critical · v3.1 (NVD)
EPSS score
8.69%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 4 · Related 2
OPENSUSE-SU-2024:10687-1RHSA-2023:3198RHSA-2024:0776RHSA-2024:0778CGA-96H5-76XJ-QGP8

Timeline

  1. 23-04-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

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

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

8.69%

Chance of exploitation in the next 30 days

Percentile

95%

Versus all other CVEs

30-day change

No change 0.00 pp

From 8.69% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (whitesourcesoftware.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard92 products
  • eco-java-gradle-1.11All versions (No fix recorded)
  • eco-java-gradle-2.0All versions (No fix recorded)
  • eco-java-gradle-2.1All versions (No fix recorded)
  • eco-java-gradle-2.10All versions (No fix recorded)
  • eco-java-gradle-2.11All versions (No fix recorded)
Oracle2 products
Org.apache.maven2 products
  • maven-compat< 3.8.1
  • maven-core< 3.8.1
Apache1 product
Apache software foundation1 product
Debian1 product
  • maven< 3.8.6-1
Mageia1 product
  • maven< 3.6.3-8.1.mga8
Quarkus1 product
Ubuntu1 product
  • mavenAll versions (No fix recorded) | < 3.3.9-3ubuntu0.1~esm1 | < 3.6.0-1~18.04.1ubuntu0.1~esm1 | < 3.6.3-1ubuntu0.1~esm1 | < 3.6.3-5ubuntu0.1~esm1

9 vendors · 102 products

References

102 links
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