CVE-2026-6984Public exploitNetwork attack vector

Authenticated template injection via unsanitized Jinja2 content

Published Apr 25, 2026 · Updated Apr 25, 2026

Server-side template injection in AstrBot 4.22.0 through 4.22.1 allows remote authenticated users to execute Jinja2 expressions. The Dashboard API's create and update routes write attacker-supplied content as template files without validation, and network_strategy.py forwards the full strings to the configured renderer. The default renderer's sandbox limits observed impact to expression evaluation and resource exhaustion; code execution requires an unsandboxed renderer.

CVSS severity8.5
High
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side template injection in AstrBot 4.22.0 through 4.22.1 allows remote authenticated users to execute Jinja2 expressions. The Dashboard API's create and update routes write attacker-supplied content as template files without validation, and network_strategy.py forwards the full strings to the configured renderer. The default renderer's sandbox limits observed impact to expression evaluation and resource exhaustion; code execution requires an unsandboxed renderer.

The record

CVE
CVE-2026-6984
Published
Apr 25, 2026
Updated
Apr 25, 2026
Vendor
AstrBotDevs
Product
AstrBot
Classifications
CWE-1336, CWE-791, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.22.0
  2. Affected versionversion=4.22.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

AstrBotDevs · AstrBotversion=4.22.0; version=4.22.1

Published CVSS scores

8.5August829CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1336Improper Neutralization of Special Elements Used in a Template Engine
CWE-791Incomplete Filtering of Special Elements
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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