# CVE-2018-11771: libcommons-compress-java: When reading a specially crafted ZIP archive, the read method of ApacheCommons Compress 1.7 to 1.17's ZipArchiveInput...

CVE-2018-11771 is fixed in libcommons-compress-java on 1 platform, first by libcommons-compress-java 1.18-1, released January 16, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-11771
- Priority: Routine
- CVSS: n/a (Low)
- EPSS: 0.0525
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no

## Description

When reading a specially crafted ZIP archive, the read method of ApacheCommons Compress 1.7 to 1.17's ZipArchiveInputStream can fail to return thecorrect EOF indication after the end of the stream has been reached. Whencombined with a java.io.InputStreamReader this can lead to an infinitestream, which can be used to mount a denial of service attack againstservices that use Compress' zip package.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libcommons-compress-java Ubuntu 24.10 (oracular) | 1.18-1 | [libcommons-compress-java 1.18-1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libcommons-compress-java-1.18-1.md) | Jan 16, 2026 |
| Linux | libcommons-compress-java Ubuntu 25.04 (plucky) | 1.18-1 | [libcommons-compress-java 1.18-1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libcommons-compress-java-1.18-1.md) | Jan 16, 2026 |

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Data as of 2026-11-07T18:46:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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