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CategoryAll Malware 629 Vulnerability 447 Exploit / PoC 212 Ransomware 174 Threat actor 170 Phishing & fraud 164 Data breach 89 Industry 26 Research 24 Policy & legal 23 Advisory 18 AI safety & security 17 AI tools & infra 12 Tools 5

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Telegram Desktop Flaw Lets Hidden JavaScript Exfiltrate Messages From HTML Exports

Telegram Desktop HTML export XSS (CVSS 8.2) let bot messages exfiltrate exported chats; fixed in 7.0.1 but old exports stay vulnerable.

ExPatch researchers found that Telegram Desktop versions 4.15.1 (March 2024) through 6.9.3 wrote bot inline-keyboard button text into HTML chat exports without escaping, allowing a bot to plant invisible JavaScript. When a user opened the export in a browser, the script could exfiltrate every message in that 1,000-message file, rewrite the displayed content, or fake a verification form. The flaw (rated CVSS 3.1 8.2) was fixed by commit 8457d13a in 6.9.4 beta (July 3, 2026) and 7.0.1 stable (July 14, 2026), but pre-fix exports remain dangerous since updating the app does not fix old files. No CVE identifier or Telegram security advisory exists, and no exploitation in the wild is claimed.

The Hacker Newsupdated Sep 15, 09:47 UTC · 1d agofirst Sep 14, 17:58 UTC · 1d agoVulnerability 2 sources1

SmugX: Chinese APT uses HTML smuggling to target European Ministries and embassies

Security AffairsJul 3, 18:25 UTC · Jul 3, 2023Vulnerability

“This site may harm your computer”. How to recognize and defeat website infections

Kaspersky SecurelistSep 18, 12:42 UTC · Sep 18, 2012Vulnerability

CVE-2026-85485: HTML::FormHandler versions before 0.410002 for Perl render some error messages into HTML without escaping

HTML::FormHandler before 0.410002 for Perl renders error messages into HTML unescaped, enabling cross-site scripting (CVE-2026-85485); fixed in 0.410002.

Robert Rothenberg disclosed CVE-2026-85485 on the oss-security mailing list, affecting HTML::FormHandler versions before 0.410002 for Perl. The module renders some error messages into HTML without escaping, which can enable cross-site scripting in applications using its rendered output. The issue is fixed in version 0.410002.

oss-securitySep 8, 20:28 UTC · 7d agoVulnerability 2 sources CVE-2026-854851

Telegram Desktop XSS Vulnerability Lets Attackers Steal Entire Chat Histories

Stored XSS in Telegram Desktop HTML chat exports (CVSS 8.2) could let attacker-controlled inline keyboard buttons steal full chat histories.

ExPatch researchers Denis and Aleksander Rostilov found a stored XSS in Telegram Desktop's HTML chat export pipeline affecting builds before Beta 6.9.4 and Stable 7.0.1. Unsanitized inline keyboard button text becomes executable JavaScript when a user exports a chat and opens the HTML file in a browser, exposing messages, metadata, and local file paths, and enabling phishing overlays. Telegram patched the issue in commit 8457d13a during July 2026; no CVE had been assigned at disclosure time.

GBHackersSep 15, 10:11 UTC · 1d agoVulnerability

Telegram Desktop Flaw Could Turn Old Chat Exports Into Data Theft Traps

ExPatch disclosed stored XSS in Telegram Desktop HTML export letting bot messages steal chat data when exports open in browsers.

ExPatch researchers Denis and Aleksander Rostilov found a stored XSS flaw (CVSS 8.2) where bot inline keyboard button text was written unescaped into HTML chat exports, executing attacker JavaScript in browsers. The payload can persist in chat history for months, exfiltrate messages, metadata, and local file paths, and rewrite the page, spreading via forwarded messages without bot membership. Telegram fixed it by applying SerializeString(), first stable fixed release 7.0.1 shipped July 14, 2026, but HTML exports created with vulnerable versions remain dangerous.

Security AffairsSep 15, 07:48 UTC · 1d agoVulnerability1· 1 read

Russia-Nexus UAC-0113 Emulating Telecommunication Providers in Ukraine

Recorded FutureAug 22, 00:00 UTC · Aug 22, 2025Vulnerability

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Kaspersky SecurelistNov 9, 18:30 UTC · Nov 9, 2004Vulnerability

Kazakhstan-associated YoroTrooper disguises origin of attacks as Azerbaijan

Cisco TalosOct 25, 12:01 UTC · Oct 25, 2023Vulnerability

Formidable Forms plugin vulnerabilities expose WordPress sites attacks

Security AffairsNov 16, 08:02 UTC · Nov 16, 2017Vulnerability

Chinese Hackers Use HTML Smuggling to Infiltrate European Ministries with PlugX

The Hacker NewsJul 4, 06:06 UTC · Jul 4, 2023Vulnerability

CVE-2026-19872: HTML::FormHandler versions before 0.410000 for Perl allow cross-site scripting via a submitted value rendered unescaped in an error message

Perl form library HTML::FormHandler before 0.410000 fixes CVE-2026-19872, a cross-site scripting flaw via unescaped submitted values in error messages.

CVE-2026-19872 was disclosed for the Perl HTML::FormHandler distribution: versions before 0.410000 render a submitted value unescaped within an error message, allowing cross-site scripting. The issue was announced by Robert Rothenberg on the oss-security mailing list. Applications using affected HTML::FormHandler versions should upgrade to 0.410000 or later.

oss-securitySep 8, 20:14 UTC · 7d agoVulnerability 2 sources CVE-2026-19872

ZDI-26-607: Microsoft Office HTML Injection Information Disclosure Vulnerability

ZDI disclosed an HTML injection flaw in Microsoft Office (CVSS 7.6) that lets remote attackers disclose sensitive information via malicious pages or files.

Zero Day Initiative advisory ZDI-26-607 describes an HTML injection vulnerability in Microsoft Office that leads to information disclosure. Remote attackers need the target to visit a malicious page or open a malicious file to trigger it. ZDI rated the issue 7.6 on the CVSS scale and the advisory lists no CVE identifier. The advisory does not indicate active exploitation.