# CVE-2023-25741: Mozilla Firefox and 2 others: Observable Discrepancy

CVE-2023-25741 is fixed in 5 products on 2 platforms, first by firefox 110.0+build3-0ubuntu0.18.04.1, released February 14, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-25741
- Priority: Routine
- CVSS: 6.5 (Medium)
- EPSS: 0.0077
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 14, 2023
- Weakness: CWE-203: Observable Discrepancy
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2023-25741

## Description

When dragging and dropping an image cross-origin, the image's size could potentially be leaked. This behavior was shipped in 109 and caused web compatibility problems as well as this security concern, so the behavior was disabled until further review. This vulnerability affects Firefox < 110.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Mozilla Firefox (en-US) | 110.0 | [Mozilla Firefox (en-US) 110.0](https://patchblox.com/security/data/fix/windows-app/mozilla.firefox-110.0.md) | Feb 16, 2023 |
| Windows apps | Mozilla Firefox ESR (en-US) | 115.4.0 | [Mozilla Firefox ESR (en-US) 115.4.0](https://patchblox.com/security/data/fix/windows-app/mozilla.firefox.esr-115.4.0.md) | Oct 17, 2023 |
| Linux | firefox Ubuntu 18.04.6 LTS (bionic) | 110.0+build3-0ubuntu0.18.04.1 | [firefox 110.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-110.0-build3-0ubuntu0.18.04.1.md) | Feb 14, 2023 |
| Linux | firefox Ubuntu 20.04 LTS (focal) | 110.0+build3-0ubuntu0.20.04.1 | [firefox 110.0+build3-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-110.0-build3-0ubuntu0.20.04.1.md) | Feb 14, 2023 |
| Linux | firefox-geckodriver Ubuntu 18.04.6 LTS (bionic) | 110.0+build3-0ubuntu0.18.04.1 | [firefox-geckodriver 110.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-geckodriver-110.0-build3-0ubuntu0.18.04.1.md) | Feb 14, 2023 |
| Linux | firefox-geckodriver Ubuntu 20.04 LTS (focal) | 110.0+build3-0ubuntu0.20.04.1 | [firefox-geckodriver 110.0+build3-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-geckodriver-110.0-build3-0ubuntu0.20.04.1.md) | Feb 14, 2023 |
| Linux | firefox-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 110.0+build3-0ubuntu0.18.04.1 | [firefox-mozsymbols 110.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-mozsymbols-110.0-build3-0ubuntu0.18.04.1.md) | Feb 14, 2023 |
| Linux | firefox-mozsymbols Ubuntu 20.04 LTS (focal) | 110.0+build3-0ubuntu0.20.04.1 | [firefox-mozsymbols 110.0+build3-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-mozsymbols-110.0-build3-0ubuntu0.20.04.1.md) | Feb 14, 2023 |

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Data as of 2026-11-08T19:12:23Z 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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