High

Code injection in Apache Ant

  • Disclosed: 03.02.2021
  • Updated: 11.10.2026 12:22

As mitigation for CVE-2020-1945 Apache Ant 1.10.8 changed the permissions of temporary files it created so that only the current user was allowed to access them. Unfortunately the fixcrlf task deleted the temporary file and created a new one without said protection, effectively nullifying the effort. This would still allow an attacker to inject modified source files into the build process.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) org.apache.ant:ant < 1.10.9 1.10.9

References

CVSS score 7.5/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness (CWE)
CWE-74, CWE-94
Platform
Java / Kotlin (Maven)
Package
org.apache.ant:ant
Disclosed
03.02.2021
Updated
11.10.2026 12:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-f62v-xpxf-3v68 - CC BY 4.0

Vulnerability history: org.apache.ant:ant

All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
4
First → latest
09.2020 08.2021
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • High 1
  • Medium 3

Disclosures per year

  1. 2020: 1
  2. 2021: 3
  3. 2022: 0
  4. 2023: 0
  5. 2024: 0
  6. 2025: 0
  7. 2026: 0
  1. Medium · 5.5 CVE-2021-36374 >= 1.9.0, < 1.9.16, >= 1.10.0, < 1.10.11 1.9.16, 1.10.11
  2. Medium · 5.5 CVE-2021-36373 < 1.9.16, >= 1.10.0, < 1.10.11 1.9.16, 1.10.11
  3. Code injection in Apache Ant this entry
    High · 7.5 CVE-2020-11979 < 1.10.9 1.10.9
  4. Medium · 6.3 CVE-2020-1945 >= 1.1, < 1.9.15, >= 1.10.0, < 1.10.8 1.9.15, 1.10.8

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