Interactive web messages right in the chat

The TBetaLeak channel discovered a large experimental subsystem called HTMLBubbles in version 12.10.283300 of Telegram for macOS.

According to the description, the messaging app is testing interactive messages built with HTML, CSS, and JavaScript right in the chat, without the need to launch a separate Web Mini App window.

@tginfo editors have confirmed the module’s presence in the code of that version based on a preliminary review, but the described behavior and how it works have not yet been independently verified.

The idea is to turn ordinary messages into widgets: product cards with selectable options, interactive boarding passes, or live charts.

According to the source, rendering is handled by the compact litehtml engine, while scripts run in a heavily restricted sandbox with CPU limits, network requests blocked, and external media prohibited. You can read all the technical details about these restrictions in the source post.

Editors’ concerns

Despite the extensive list of restrictions, @tginfo editors have serious security concerns about this kind of feature. Integrating web engines that support JavaScript execution — even in a heavily restricted form — directly into the chat interface poses a huge risk.

Experience shows that no matter how thoroughly developers isolate an environment, vulnerabilities are regularly found in rendering systems. The risk of malicious code running simply by viewing a chat raises serious questions about whether these widgets are worth it.

For now, HTMLBubbles is an early experimental concept being tested within the Telegram team. The feature could change substantially during development or be canceled entirely.

#macOS #beta

Dangerous vulnerability in Telegram Desktop: any file can be stolen with one click

What you MUST NOT do and how to protect yourself:
• Do not keep using versions earlier than 7.2.9 — update the client immediately. If you use an unofficial client, temporarily switch to the official one until an update is released.

Download:
• Windows / macOS / Linux: official website or GitHub.
• Windows: Microsoft Store.
• macOS: App Store.
• Linux: Flathub, Snapcraft.

Advice for users of older clients:

• Links can be dangerous: whenever you click a link, read the pop-up window carefully — if Telegram shows an unusual structure in the link (for example, one starting with tg://), do not open it.

• Do not use the client without a local passcode: enabling one encrypts the session files in the tdata directory, preventing immediate account hijacking even if those files are leaked.

What is the issue?

A vulnerability has been discovered in Telegram Desktop clients earlier than version 7.2.9 (CVE-2026-107181). Because the ; delimiter was not escaped, parameters in tg:// links were interpreted as separate IPC commands. Using the interpret: handler, an attacker could cause files from the system to be sent covertly to their channel, without the user’s confirmation, when the user clicked a specially crafted link.

The main risk

The danger is not limited to stealing tdata session files and hijacking accounts. Exploiting the vulnerability makes it possible to covertly steal absolutely any files on the computer that the user can access: documents, saved browser sessions, SSH keys, system configurations, or cryptocurrency wallets.

#security #desktop #vulnerabilities

Note. AppConfig has not been updated on the production server yet. Users still don't have access to the new Gram Wallet. Stay tuned.

The full list of new features was posted earlier.

@telelakel

Telegram updated to version 13.0: native wallet and instant Gram transfers

Telegram has begun rolling out its own non-custodial wallet, Gram Wallet, in stages. For now, the service supports only Gram cryptocurrency and NFTs associated with the messaging app: collectible gifts and usernames, and anonymous numbers.

Gram Wallet is currently available to a limited number of users. To unlock access to the wallet before it rolls out to all Telegram users, you’ll need to update the app to the latest version and receive a transfer of at least 0.1 Gram from another user.

Once the wallet is activated, its balance will appear in the “Money” section of Settings, in place of the Wallet bot, which was renamed Walt and hidden from the main menu shortly before the native wallet launched. You’ll also be able to instantly send Gram to people you’re chatting with through the Gram tab in the attachment menu of a one-on-one chat.

One feature of the integrated wallet is the ability to make up to five Gram transfers a day to other Telegram users or wallet addresses without paying TON blockchain fees. The first transaction, however, is subject to a smart contract initialization fee.

Subscribe to our channel @infoton to stay up to date on developments involving the TON blockchain and Gram cryptocurrency.

Download the update
• Android: Google Play, APK from the official website or the verified channel.
• iOS: App Store.
• Windows / macOS / Linux: official website or GitHub.
• Windows: Microsoft Store.
• Linux: Flathub, Snapcraft.
• macOS: App Store or the verified channel.

#update #Android #iOS #Desktop #macOS