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CVE-2025-8039— Search terms persisted in URL bar

Quick assessment

Affected
Mozilla Firefox
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mozilla Firefox等都是美国Mozilla基金会的产品。Mozilla Firefox是一款开源Web浏览器。Mozilla Firefox ESR是Firefox(Web浏览器)的一个延长支持版本。Mozilla Thunderbird是一套从Mozilla Application Suite独立出来的电子邮件客户端软件。 Mozilla多款产品存在信息泄露漏洞，该漏洞源于搜索词在URL栏中持续存在。以下产品和版本受到影响：Firefox 141之前版本、Firefox ESR 140.1之

AI Predicted 5.3 Difficulty: Theoretical EPSS 0.28% · P20

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 4

VendorProduct Version RangeStatus
Mozilla Firefox 140.1≤ 140.* unaffected
141≤ * unaffected
Mozilla Thunderbird 140.1≤ 140.* unaffected
141≤ * unaffected
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I. Basic Information for CVE-2025-8039

Vulnerability Information
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Vulnerability Title
Search terms persisted in URL bar
Source: CVE Program / CVE List V5
Vulnerability Description
In some cases search terms persisted in the URL bar even after navigating away from the search page. This vulnerability was fixed in Firefox 141, Firefox ESR 140.1, Thunderbird 141, and Thunderbird 140.1.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Mozilla多款产品 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox等都是美国Mozilla基金会的产品。Mozilla Firefox是一款开源Web浏览器。Mozilla Firefox ESR是Firefox(Web浏览器)的一个延长支持版本。Mozilla Thunderbird是一套从Mozilla Application Suite独立出来的电子邮件客户端软件。 Mozilla多款产品存在信息泄露漏洞，该漏洞源于搜索词在URL栏中持续存在。以下产品和版本受到影响：Firefox 141之前版本、Firefox ESR 140.1之
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 140.1 ~ 140.* -
Mozilla Thunderbird 140.1 ~ 140.* -

II. Public POCs for CVE-2025-8039

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III. Intelligence Information for CVE-2025-8039

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Vendor Advisories for CVE-2025-8039 (4)

Same Patch Batch · Mozilla · 2025-07-22 · 16 CVEs total

CVE-2025-8043 Incorrect URL truncation
CVE-2025-8035 Memory safety bugs fixed in Firefox ESR 128.13, Thunderbird ESR 128.13, Firefox ESR 140.1,
CVE-2025-8044 Memory safety bugs fixed in Firefox 141 and Thunderbird 141
CVE-2025-8040 Memory safety bugs fixed in Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thun
CVE-2025-8034 Memory safety bugs fixed in Firefox ESR 115.26, Firefox ESR 128.13, Thunderbird ESR 128.13
CVE-2025-8032 XSLT documents could bypass CSP
CVE-2025-8038 CSP frame-src was not correctly enforced for paths
CVE-2025-8033 Incorrect JavaScript state machine for generators
CVE-2025-8030 Potential user-assisted code execution in “Copy as cURL” command
CVE-2025-8031 Incorrect URL stripping in CSP reports
CVE-2025-8037 Nameless cookies shadow secure cookies
CVE-2025-8028 Large branch table could lead to truncated instruction
CVE-2025-8029 javascript: URLs executed on object and embed tags
CVE-2025-8036 DNS rebinding circumvents CORS
CVE-2025-8027 JavaScript engine only wrote partial return value to stack

IV. Related Vulnerabilities

Same product: Firefox
Same vendor: Mozilla

V. Comments for CVE-2025-8039

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