CVE-2025-5266— Script element events leaked cross-origin resource status
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2025-5266
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Script element events leaked cross-origin resource status
Source: NVD (National Vulnerability Database)
Vulnerability Description
Script elements loading cross-origin resources generated load and error events which leaked information enabling XS-Leaks attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Mozilla Firefox 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox是美国Mozilla基金会的一款开源Web浏览器。 Mozilla Firefox 139之前版本和Firefox ESR 128.11之前版本存在安全漏洞，该漏洞源于脚本元素加载跨源资源导致信息泄露，可能引发XS-Leaks攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Mozilla | Firefox | 128.11 ~ 128.* | - | |
| Mozilla | Thunderbird | 128.11 ~ 128.* | - |
II. Public POCs for CVE-2025-5266
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2025-5266
请登录查看更多情报信息。
Same Patch Batch · Mozilla · 2025-05-27 · 11 CVEs total
| CVE-2025-5272 | Memory safety bugs fixed in Firefox 139 and Thunderbird 139 | |
| CVE-2025-5270 | SNI was sometimes unencrypted | |
| CVE-2025-5271 | Devtools' preview ignored CSP headers | |
| CVE-2025-5269 | Memory safety bug fixed in Firefox ESR 128.11 and Thunderbird 128.11 | |
| CVE-2025-5268 | Memory safety bugs fixed in Firefox 139, Thunderbird 139, Firefox ESR 128.11, and Thunderb | |
| CVE-2025-5267 | Clickjacking vulnerability could have led to leaking saved payment card details | |
| CVE-2025-5264 | Potential local code execution in “Copy as cURL” command | |
| CVE-2025-5265 | Potential local code execution in “Copy as cURL” command | |
| CVE-2025-5263 | Error handling for script execution was incorrectly isolated from web content | |
| CVE-2025-5262 | Mozilla Thunderbird 安全漏洞 |
IV. Related Vulnerabilities
Same product: Firefox
- CVE-2026-8093
Memory safety bugs fixed in Thunderbird 150.0.2 - CVE-2026-8094
Other issue in the WebRTC component - CVE-2026-8092
Memory safety bugs fixed in Thunderbird ESR 140.10.2 and Thu - CVE-2026-8091
Incorrect boundary conditions in the Audio/Video: Playback c - CVE-2026-8090
Use-after-free in the DOM: Networking component
Same vendor: Mozilla
- CVE-2026-8093
Memory safety bugs fixed in Thunderbird 150.0.2 - CVE-2026-8094
Other issue in the WebRTC component - CVE-2026-8092
Memory safety bugs fixed in Thunderbird ESR 140.10.2 and Thu - CVE-2026-8091
Incorrect boundary conditions in the Audio/Video: Playback c - CVE-2026-8090
Use-after-free in the DOM: Networking component
V. Comments for CVE-2025-5266
No comments yet