telegram-search contains a stored cross-site scripting vulnerability that allows remote attackers to execute arbitrary JavaScript in victims' browsers by sending crafted messages containing unsanitized HTML to a shared Telegram group. The highlightKeyword function in MessageList.vue passes raw message content directly to v-html without HTML escaping or sanitization, enabling stored, cross-user, zero-click execution of injected payloads such as image onerror handlers when victims browse or search messages.
https://www.vulncheck.com/advisories/telegram-search-stored-xss-via-v-html-in-messagelist-vue
https://github.com/groupultra/telegram-search/commit/54f6adced844ce9990228d75e31348bfed934e05
https://github.com/GramSearch/telegram-search/pull/654
Published: 2026-08-11
Updated: 2026-08-11
Base Score: 8.5
Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:N
Severity: High
Base Score: 8.7
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Severity: High
Base Score: 8.2
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
Severity: High