Ubuntu USN · USN-8225-1

Python marshmallow vulnerabilities

Published: Thu, 30 Apr 2026 02:19

CVE-2025-68480CVE-2018-17175

Summary

Several security issues were fixed in Python marshmallow.

Details

Jared Deckard discovered that Python marshmallow did not correctly handle hiding certain fields. An attacker could possibly use this issue to leak sensitive information. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-17175) It was discovered that Python marshmallow did not efficiently handle merging certain objects. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2025-68480)

Recommended actions per Ubuntu release

StackPatch playbook auto-generated per release codename and per affected package.

Ubuntu bionic

python-marshmallow→3.0.0b3-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.0.0b3-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python-marshmallow=3.0.0b3-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
python3-marshmallow→3.0.0b3-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.0.0b3-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-marshmallow=3.0.0b3-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
python3-marshmallow-doc→3.0.0b3-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.0.0b3-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-marshmallow-doc=3.0.0b3-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

Ubuntu focal

python-marshmallow→3.4.0-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.4.0-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python-marshmallow=3.4.0-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
python3-marshmallow→3.4.0-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.4.0-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-marshmallow=3.4.0-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
python3-marshmallow-doc→3.4.0-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.4.0-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-marshmallow-doc=3.4.0-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

Ubuntu jammy

python-marshmallow→3.13.0-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.13.0-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python-marshmallow=3.13.0-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
python3-marshmallow→3.13.0-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.13.0-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-marshmallow=3.13.0-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
python3-marshmallow-doc→3.13.0-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.13.0-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-marshmallow-doc=3.13.0-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

Ubuntu noble

python-marshmallow→3.20.1-1.1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.20.1-1.1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python-marshmallow=3.20.1-1.1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
python3-marshmallow→3.20.1-1.1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.20.1-1.1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-marshmallow=3.20.1-1.1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
python3-marshmallow-doc→3.20.1-1.1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.20.1-1.1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-marshmallow-doc=3.20.1-1.1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

Ubuntu resolute

python-marshmallow→3.26.1-0.4ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.26.1-0.4ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python-marshmallow=3.26.1-0.4ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
python3-marshmallow→3.26.1-0.4ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.26.1-0.4ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-marshmallow=3.26.1-0.4ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
python3-marshmallow-doc→3.26.1-0.4ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.26.1-0.4ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-marshmallow-doc=3.26.1-0.4ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

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