XSS in Gramsearch Telegram-Search
CVE-2026-73031
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.007 (49.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.007 · change: +0.003
Affected products
- Gramsearch Telegram-Search — versions 0
Weakness classification (CWE)
References
- github.com/GramSearch/telegram-search (product)
- github.com/GramSearch/telegram-search/issues/653 (issue-tracking)
- github.com/groupultra/telegram-search/commit/54f6adced844ce9990228d75e31348bfed… (patch)
- github.com/GramSearch/telegram-search/pull/654 (technical-description)
- www.vulncheck.com/advisories/telegram-search-stored-xss-via-v-html-in-messageli… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-73031?
- CVE-2026-73031 is a high-severity vulnerability in Gramsearch Telegram-Search, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-08-11.
- How severe is CVE-2026-73031?
- High severity. CVSS v3 base score is 8.7 out of 10.