CVE-2026-10210Public exploitNetwork attack vector

LLM prompt manipulation via incomplete description sanitization

Published Jun 1, 2026 · Updated Jun 1, 2026

Prompt injection in AstrBot 4.23.6 allows remote authenticated users to alter LLM instructions through crafted skill descriptions. The _sanitize_prompt_description function removes backticks and control characters but leaves instruction text intact before build_skills_prompt inserts it into the system prompt. Exploitation requires low-privileged remote access and a controllable sandbox-only skill description; resulting actions remain bounded by the bot's configured tools and data access.

CVSS severity6.3
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Prompt injection in AstrBot 4.23.6 allows remote authenticated users to alter LLM instructions through crafted skill descriptions. The _sanitize_prompt_description function removes backticks and control characters but leaves instruction text intact before build_skills_prompt inserts it into the system prompt. Exploitation requires low-privileged remote access and a controllable sandbox-only skill description; resulting actions remain bounded by the bot's configured tools and data access.

The record

CVE
CVE-2026-10210
Published
Jun 1, 2026
Updated
Jun 1, 2026
Vendor
AstrBotDevs
Product
AstrBot
Classifications
CWE-707, CWE-74
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 1, 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=4.23.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

AstrBotDevs · AstrBotversion=4.23.6

Published CVSS scores

6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

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.

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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-707Improper Neutralization
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

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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