# CVE-2026-2950: cockpit: Impact: Lodash versions 4.17.23 and earlier are vulnerable to prototype pollution in the _.unset and _.omit functions

CVE-2026-2950 is fixed in 11 products on 1 platform, first by libjs-lodash 4.17.4+dfsg-1ubuntu0.1~esm1, released March 31, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-2950
- Priority: Routine
- CVSS: 6.5 (moderate)
- EPSS: 0.0034
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 31, 2026

## Description

Impact: Lodash versions 4.17.23 and earlier are vulnerable to prototype pollution in the _.unset and _.omit functions. The fix for (CVE-2025-13465: https://github.com/lodash/lodash/security/advisories/GHSA-xxjr-mmjv-4gpg) only guards against string key members, so an attacker can bypass the check by passing array-wrapped path segments. This allows deletion of properties from built-in prototypes such as Object.prototype, Number.prototype, and String.prototype. The issue permits deletion of prototype properties but does not allow overwriting their original behavior. Patches: This issue is patched in 4.18.0. Workarounds: None. Upgrade to the patched version.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | cockpit RHEL 10 | 356.1-1.el10_2 | [RHBA-2026:21388](https://patchblox.com/security/data/fix/linux/rhba-2026-21388.md) | Mar 31, 2026 |
| Linux | cockpit RHEL 9 | 0:356.1-1.el9_8 | [RHBA-2026:21387](https://patchblox.com/security/data/fix/linux/rhba-2026-21387.md) | May 27, 2026 |
| Linux | cockpit-bridge RHEL 9 | 0:356.1-1.el9_8 | [RHBA-2026:21387](https://patchblox.com/security/data/fix/linux/rhba-2026-21387.md) | May 27, 2026 |
| Linux | cockpit-doc RHEL 9 | 0:356.1-1.el9_8 | [RHBA-2026:21387](https://patchblox.com/security/data/fix/linux/rhba-2026-21387.md) | May 27, 2026 |
| Linux | cockpit-packagekit RHEL 9 | 0:356.1-1.el9_8 | [RHBA-2026:21387](https://patchblox.com/security/data/fix/linux/rhba-2026-21387.md) | May 27, 2026 |
| Linux | cockpit-storaged RHEL 9 | 0:356.1-1.el9_8 | [RHBA-2026:21387](https://patchblox.com/security/data/fix/linux/rhba-2026-21387.md) | May 27, 2026 |
| Linux | cockpit-system RHEL 9 | 0:356.1-1.el9_8 | [RHBA-2026:21387](https://patchblox.com/security/data/fix/linux/rhba-2026-21387.md) | May 27, 2026 |
| Linux | cockpit-ws RHEL 9 | 0:356.1-1.el9_8 | [RHBA-2026:21387](https://patchblox.com/security/data/fix/linux/rhba-2026-21387.md) | May 27, 2026 |
| Linux | cockpit-ws-selinux RHEL 9 | 0:356.1-1.el9_8 | [RHBA-2026:21387](https://patchblox.com/security/data/fix/linux/rhba-2026-21387.md) | May 27, 2026 |
| Linux | libjs-lodash Ubuntu 18.04.6 LTS (bionic) | 4.17.4+dfsg-1ubuntu0.1~esm1 | [libjs-lodash 4.17.4+dfsg-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libjs-lodash-4.17.4-dfsg-1ubuntu0.1-esm1.md) | Mar 31, 2026 |
| Linux | libjs-lodash Ubuntu 20.04 LTS (focal) | 4.17.15+dfsg-2ubuntu0.1~esm1 | [libjs-lodash 4.17.15+dfsg-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libjs-lodash-4.17.15-dfsg-2ubuntu0.1-esm1.md) | Mar 31, 2026 |
| Linux | libjs-lodash Ubuntu 22.04.1 LTS (jammy) | 4.17.21+dfsg+~cs8.31.198.20210220-5ubuntu0.1~esm1 | [libjs-lodash 4.17.21+dfsg+~cs8.31.198.20210220-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libjs-lodash-4.17.21-dfsg-cs8.31.198.20210220-5ubuntu0.1-esm1.md) | Mar 31, 2026 |
| Linux | libjs-lodash Ubuntu 24.04.5 LTS (noble) | 4.17.21+dfsg+~cs8.31.198.20210220-9ubuntu0.24.04.1~esm1 | [libjs-lodash 4.17.21+dfsg+~cs8.31.198.20210220-9ubuntu0.24.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libjs-lodash-4.17.21-dfsg-cs8.31.198.20210220-9ubuntu0.24.04.1-esm1.md) | Mar 31, 2026 |
| Linux | libjs-lodash Ubuntu 25.10 (questing) | 4.17.21+dfsg+~cs8.31.198.20210220-9ubuntu0.25.10.1 | [libjs-lodash 4.17.21+dfsg+~cs8.31.198.20210220-9ubuntu0.25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libjs-lodash-4.17.21-dfsg-cs8.31.198.20210220-9ubuntu0.25.10.1.md) | Mar 31, 2026 |
| Linux | libjs-lodash Ubuntu 26.04.1 LTS (resolute) | 4.17.23+dfsg-1ubuntu0.1~esm1 | [libjs-lodash 4.17.23+dfsg-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libjs-lodash-4.17.23-dfsg-1ubuntu0.1-esm1.md) | Mar 31, 2026 |
| Linux | node-lodash Debian 12.15 (bookworm) | 4.17.21+dfsg+~cs8.31.198.20210220-9+deb12u1 | [DEBIAN-CVE-2026-2950](https://patchblox.com/security/data/fix/linux/debian-cve-2026-2950.md) | Mar 31, 2026 |
| Linux | node-lodash Debian 13.5 (trixie) | 4.17.21+dfsg+~cs8.31.198.20210220-9+deb13u1 | [DEBIAN-CVE-2026-2950](https://patchblox.com/security/data/fix/linux/debian-cve-2026-2950.md) | Mar 31, 2026 |
| Linux | node-lodash Debian 14 | 4.18.1+dfsg-1 | [DEBIAN-CVE-2026-2950](https://patchblox.com/security/data/fix/linux/debian-cve-2026-2950.md) | Mar 31, 2026 |
| Linux | node-lodash Ubuntu 18.04.6 LTS (bionic) | 4.17.4+dfsg-1ubuntu0.1~esm1 | [node-lodash 4.17.4+dfsg-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-node-lodash-4.17.4-dfsg-1ubuntu0.1-esm1.md) | Mar 31, 2026 |
| Linux | node-lodash Ubuntu 20.04 LTS (focal) | 4.17.15+dfsg-2ubuntu0.1~esm1 | [node-lodash 4.17.15+dfsg-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-node-lodash-4.17.15-dfsg-2ubuntu0.1-esm1.md) | Mar 31, 2026 |
| Linux | node-lodash Ubuntu 22.04.1 LTS (jammy) | 4.17.21+dfsg+~cs8.31.198.20210220-5ubuntu0.1~esm1 | [node-lodash 4.17.21+dfsg+~cs8.31.198.20210220-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-node-lodash-4.17.21-dfsg-cs8.31.198.20210220-5ubuntu0.1-esm1.md) | Mar 31, 2026 |
| Linux | node-lodash Ubuntu 24.04.5 LTS (noble) | 4.17.21+dfsg+~cs8.31.198.20210220-9ubuntu0.24.04.1~esm1 | [node-lodash 4.17.21+dfsg+~cs8.31.198.20210220-9ubuntu0.24.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-node-lodash-4.17.21-dfsg-cs8.31.198.20210220-9ubuntu0.24.04.1-esm1.md) | Mar 31, 2026 |
| Linux | node-lodash Ubuntu 25.10 (questing) | 4.17.21+dfsg+~cs8.31.198.20210220-9ubuntu0.25.10.1 | [node-lodash 4.17.21+dfsg+~cs8.31.198.20210220-9ubuntu0.25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-node-lodash-4.17.21-dfsg-cs8.31.198.20210220-9ubuntu0.25.10.1.md) | Mar 31, 2026 |
| Linux | node-lodash Ubuntu 26.04.1 LTS (resolute) | 4.17.23+dfsg-1ubuntu0.1~esm1 | [node-lodash 4.17.23+dfsg-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-node-lodash-4.17.23-dfsg-1ubuntu0.1-esm1.md) | Mar 31, 2026 |
| Linux | node-lodash-packages Ubuntu 20.04 LTS (focal) | 4.17.15+dfsg-2ubuntu0.1~esm1 | [node-lodash-packages 4.17.15+dfsg-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-node-lodash-packages-4.17.15-dfsg-2ubuntu0.1-esm1.md) | Mar 31, 2026 |
| Linux | node-lodash-packages Ubuntu 22.04.1 LTS (jammy) | 4.17.21+dfsg+~cs8.31.198.20210220-5ubuntu0.1~esm1 | [node-lodash-packages 4.17.21+dfsg+~cs8.31.198.20210220-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-node-lodash-packages-4.17.21-dfsg-cs8.31.198.20210220-5ubuntu0.1-esm1.md) | Mar 31, 2026 |
| Linux | node-lodash-packages Ubuntu 24.04.5 LTS (noble) | 4.17.21+dfsg+~cs8.31.198.20210220-9ubuntu0.24.04.1~esm1 | [node-lodash-packages 4.17.21+dfsg+~cs8.31.198.20210220-9ubuntu0.24.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-node-lodash-packages-4.17.21-dfsg-cs8.31.198.20210220-9ubuntu0.24.04.1-esm1.md) | Mar 31, 2026 |
| Linux | node-lodash-packages Ubuntu 25.10 (questing) | 4.17.21+dfsg+~cs8.31.198.20210220-9ubuntu0.25.10.1 | [node-lodash-packages 4.17.21+dfsg+~cs8.31.198.20210220-9ubuntu0.25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-node-lodash-packages-4.17.21-dfsg-cs8.31.198.20210220-9ubuntu0.25.10.1.md) | Mar 31, 2026 |
| Linux | node-lodash-packages Ubuntu 26.04.1 LTS (resolute) | 4.17.23+dfsg-1ubuntu0.1~esm1 | [node-lodash-packages 4.17.23+dfsg-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-node-lodash-packages-4.17.23-dfsg-1ubuntu0.1-esm1.md) | Mar 31, 2026 |

---

Data as of 2026-11-08T06:59:42Z 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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