Telegram's development team typically deploys hotfixes within hours of identifying a major regression.
In some instances, bad actors distribute "text bombs" or specifically formatted media files within public channels. When the app attempts to render these unique characters or corrupted file structures, it triggers a memory overflow, causing the system to crash.
[Attached: screen recording of the crash loop on Telegram Web] crush bug telegram new
[Incoming Exploited Data / Action] │ ▼ [Telegram Parsing Engine] │ ┌────────┴────────┐ ▼ ▼ [Memory Overflow] [Null Pointer Dereference] (Bad String/Media) (Permission Mismatch) │ │ └────────┬────────┘ ▼ [Instant App Crash] 1. The Text Bomb (Buffer Overflow)
: If the app won't open at all, deleting and reinstalling often clears corrupted local data without losing your cloud chats. New Features in the April 2026 Update [Attached: screen recording of the crash loop on
The "crush bug" on Telegram is a type of malicious message designed to overwhelm the app's processing capabilities, causing it to freeze or crash repeatedly upon viewing. This often involves specially crafted strings of characters or massive hidden data payloads.
Unlike typical bugs, this 2026 iteration has two distinct profiles: This often involves specially crafted strings of characters
As of late April 2026, several crashing issues have been identified across different platforms:
The real curiosity of CVE‑2026‑7701 lies in . The vendor formally disputes the classification, arguing: “The described scenario does not lead to any security issue or vulnerability, and only causes a one‑time crash. In the outlined scenario, the targeted user must perform an active action, which doesn’t produce any consequences after the app is relaunched.”
That said, Telegram bots and third‑party clients can introduce their own vulnerabilities. , a popular open‑source Telegram bot framework, had multiple CVEs in early 2026, including:
It appears that newer Telegram updates may have, inadvertently or intentionally, reduced compatibility with older iOS versions, creating a conflict.