Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-57963— Chat UI manipulation by injection

Quick assessment

Affected
Mozilla Thunderbird
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 thunderbird是Mozilla基金会开源的一款跨平台电子邮件和新闻客户端。 Mozilla Thunderbird 140.12.1之前版本和152.0.1之前版本存在跨站脚本漏洞，该漏洞源于发送HTML聊天消息时未对内容进行适当过滤，可能导致攻击者注入任意样式内容、钓鱼链接和CSS，从而操纵聊天用户界面。

AI Predicted 7.5 Difficulty: Easy EPSS 0.31% · P21

Affected Version Matrix 2

VendorProduct Version RangeStatus
Mozilla Thunderbird 140.12.1≤ 140.* unaffected
152.0.1≤ * unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-57963

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
Chat UI manipulation by injection
Source: CVE Program / CVE List V5
Vulnerability Description
An attacker who can send HTML chat messages (via Matrix or XMPP) can inject arbitrary styled content, phishing links, and CSS that manipulates the chat UI. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.
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 Thunderbird 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla thunderbird是Mozilla基金会开源的一款跨平台电子邮件和新闻客户端。 Mozilla Thunderbird 140.12.1之前版本和152.0.1之前版本存在跨站脚本漏洞，该漏洞源于发送HTML聊天消息时未对内容进行适当过滤，可能导致攻击者注入任意样式内容、钓鱼链接和CSS，从而操纵聊天用户界面。
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 Thunderbird 140.12.1 ~ 140.* -

II. Public POCs for CVE-2026-57963

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-57963

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-57963 (2)

IV. Related Vulnerabilities

Same product: Thunderbird
Same vendor: Mozilla

V. Comments for CVE-2026-57963

No comments yet

Leave a comment