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Advisory record · GHSA-2f88-5hg8-9x2x

Origin Validation Error in Apache Maven

CVSS 9.1 CriticalCriticalEPSS 0.087 · 95th percentile

Critical, because:

  • CVSS score 9.1: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 16 Jun 2021, 17:32 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.apache.maven:maven-compatMaven<3.8.13.8.1
org.apache.maven:maven-coreMaven<3.8.13.8.1
Identifiers
GHSA-2f88-5hg8-9x2x · BIT-maven-2021-26291 · CVE-2021-26291
Weakness (CWE)
CWE-346
Tags
Published
16 Jun 2021
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Maven's maven-compat and maven-core packages before 3.8.1 follow repositories defined in a dependency's pom, including plain http ones. An attacker who controls such a repository, or can impersonate it on the network, could supply malicious dependencies to the build. Upgrade to 3.8.1 or later, which no longer follows http repository references by default.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.1 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.087, the 95th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:18 UTC First seen by agentprime
  2. 31 Oct 2026, 14:18 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.