Improper Link Resolution in AstrBot by AstrBotDevs
CVE-2026-16077

4.8MEDIUM

Key Information:

Vendor

Astrbotdevs

Status
Astrbot
Vendor
CVE Published:
18 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-16077?

AstrBot by AstrBotDevs is susceptible to an improper link resolution vulnerability in the _normalize_rw_path function within the Filesystem Computer-Use Tool component. This flaw allows attackers with local access to manipulate the tool, leveraging link following capabilities to access unauthorized files. The exploit has been publicly disclosed, and despite early notification to the vendor, no response was received.

Affected Version(s)

AstrBot 4.25.0

AstrBot 4.25.1

AstrBot 4.25.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-16077 - Proof of Concept

References

https://vuldb.com/vuln/379792
vdb-entrytechnical-description
https://vuldb.com/vuln/379792/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-16077
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Eric-d (VulDB User)
VulDB CNA Team
.