1sealsemantic last-mile verification

Research / Finding

Fix web

F-TELEGRAM-IOS-SSRF-001

Public snapshot: 26 Sep 2026. Status, releases and attribution belong to each source below; none is inferred from another record.

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Recorded evidence

—score not recorded
TelegramMessenger/Telegram-iOSReported fixTelegramMessenger/Telegram-iOS

Fix web

fixed publicly
details
Finding IDs
F-TELEGRAM-IOS-SSRF-001
Status
fixed publicly
Reported via
Telegram security contact
Note
public commit 6eb201465096 on 2026-04-29 adds allowed-bot-media URL validation with canonical IPv4 parsing and public IPv4/IPv6 checks before Web App media_url fetches.

F-TELEGRAM-IOS-SSRF-001: Outbound request trust. Bot media URLs bypass the intended public-network destination boundary. Reviewed 24 Sep 2026. Mechanism assessed by 1seal.

Mechanism source for F-TELEGRAM-IOS-SSRF-001

Security area (1seal assessment): Authorization. Bot media URLs bypass the intended public-network destination boundary. Reviewed 24 Sep 2026.

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How this page groups evidence

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