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MEDIUM

CVE-2021-29425

CVSS v3

4.8

MEDIUM

EPSS Score

10.5 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • com.cosium.vet:vetMavenfrom 1.0 · no fixed version listed
  • com.virjar:ratel-apiMavenfrom 1.0.0 · no fixed version listed
  • commons-io:commons-ioMavenall versions · fixed in 2.7
  • net.hasor:cobble-langMavenfrom 4.4.1 · no fixed version listed
  • org.apache.commons:commons-ioMavenall versions · no fixed version listedand 2 other packages
  • org.apache.servicemix.bundles:org.apache.servicemix.bundles.commons-ioMavenfrom 1.4 · no fixed version listed
  • org.checkerframework.annotatedlib:commons-ioMavenfrom 2.6 · fixed in 2.7
  • org.smartboot.servlet:servlet-coreMavenfrom 0.1.9 · no fixed version listed

Vendor advisories

  • CVE-2021-29425 Red Hat Product Security250 products fixed · 16 known affected

    apache-commons-io: Limited path traversal in Apache Commons IO 2.2 to 2.6

    commons-io as a component of A-MQ Clients 2 · commons-io as a component of Red Hat BPM Suite 6 · commons-io as a component of Red Hat Data Grid 8

  • RHSA-2022:1110 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Decision Manager 7.12.1 security update

  • RHSA-2022:1108 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Process Automation Manager 7.12.1 security update

  • RHSA-2021:5134 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Fuse 7.10.0 release and security update

  • RHSA-2021:3700 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat AMQ Broker 7.9.0 release and security update

  • RHSA-2021:3660 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.1 security update

10 more advisories

Full record on NVD

Description

In Apache Commons IO before 2.7, When invoking the method FileNameUtils.normalize with an improper input string, like "//../foo", or "\\\\..\\foo", the result would be the same value, thus possibly providing access to files in the parent directory, but not further above (thus "limited" path traversal), if the calling code would use the result to construct a path value.

Technical details

Published
2021-04-13

Frequently asked questions

What is CVE-2021-29425?

In Apache Commons IO before 2.7, When invoking the method FileNameUtils.normalize with an improper input string, like "//../foo", or "\\\\..\\foo", the result would be the same value, thus possibly providing access to files in the parent directory, but not further above (thus "limited" path traversal), if the calling code would use the result to construct a path value.

Is CVE-2021-29425 actively exploited?

Active exploitation of CVE-2021-29425 has not been confirmed. Its EPSS score was 10.5% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-29425?

CVE-2021-29425 has a CVSS v3 base score of 4.8 (MEDIUM severity).

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