CVE-2021-38503
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I. Basic Information for CVE-2021-38503
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
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 安全特征问题漏洞
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 存在安全特征问题漏洞，该漏洞是由于iframe沙箱规则没有正确地应用于XSLT样式表，远程攻击者可利用该漏洞绕过已实施的安全限制。
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 | unspecified ~ 94 | - | |
| Mozilla | Thunderbird | unspecified ~ 91.3 | - | |
| Mozilla | Firefox ESR | unspecified ~ 91.3 | - |
II. Public POCs for CVE-2021-38503
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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- https://www.mozilla.org/security/advisories/mfsa2021-49/x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2021-50/x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2021-48/x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-38503
Same Patch Batch · Mozilla · 2021-12-08 · 27 CVEs total
| CVE-2021-43535 | Mozilla Firefox 资源管理错误漏洞 | |
| CVE-2021-43527 | Mozilla Network Security Services 缓冲区错误漏洞 | |
| CVE-2021-43546 | Mozilla Firefox 安全漏洞 | |
| CVE-2021-43545 | Mozilla Firefox 安全漏洞 | |
| CVE-2021-43544 | Mozilla Firefox 跨站脚本漏洞 | |
| CVE-2021-43543 | Mozilla Firefox 跨站脚本漏洞 | |
| CVE-2021-43542 | Mozilla Firefox ESR 信息泄露漏洞 | |
| CVE-2021-43541 | Mozilla Firefox ESR 安全漏洞 | |
| CVE-2021-43540 | Mozilla Firefox 权限许可和访问控制问题漏洞 | |
| CVE-2021-43539 | Mozilla Firefox ESR 资源管理错误漏洞 | |
| CVE-2021-43538 | Mozilla Firefox 竞争条件问题漏洞 | |
| CVE-2021-43537 | Mozilla Firefox ESR 代码问题漏洞 | |
| CVE-2021-43536 | Mozilla Firefox ESR 信息泄露漏洞 | |
| CVE-2021-38504 | Mozilla Firefox 资源管理错误漏洞 | |
| CVE-2021-43534 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2021-43533 | Mozilla Firefox 安全漏洞 | |
| CVE-2021-43532 | Mozilla Firefox 输入验证错误漏洞 | |
| CVE-2021-43531 | Mozilla Firefox 访问控制错误漏洞 | |
| CVE-2021-43530 | Mozilla Firefox 跨站脚本漏洞 | |
| CVE-2021-43528 | Mozilla Thunderbird 安全特征问题漏洞 |
Showing top 20 of 27 CVEs. View all on vendor page → →
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-2021-38503
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