AstrBotDevs AstrBot up to 4.25.5 Filesystem Computer-Use Tool fs.py _normalize_rw_path link following

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.8$0-$5k2.23

Summaryinfo

A vulnerability classified as critical was found in AstrBotDevs AstrBot up to 4.25.5. The affected element is the function _normalize_rw_path of the file astrbot/core/tools/computer_tools/fs.py of the component Filesystem Computer-Use Tool. Executing a manipulation can lead to link following. This vulnerability is tracked as CVE-2026-16077. The attack is restricted to local execution. Moreover, an exploit is present. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability classified as critical was found in AstrBotDevs AstrBot up to 4.25.5. This vulnerability affects the function _normalize_rw_path of the file astrbot/core/tools/computer_tools/fs.py of the component Filesystem Computer-Use Tool. The manipulation with an unknown input leads to a link following vulnerability. The CWE definition for the vulnerability is CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared for download at gist.github.com. This vulnerability was named CVE-2026-16077. The exploitation appears to be easy. The attack needs to be approached locally. Technical details and also a public exploit are known.

It is possible to download the exploit at gist.github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Link following
CWE: CWE-59
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

07/17/2026 Advisory disclosed
07/17/2026 +0 days VulDB entry created
07/17/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: gist.github.com
Status: Not defined

CVE: CVE-2026-16077 (🔒)
GCVE (CVE): GCVE-0-2026-16077
GCVE (VulDB): GCVE-100-379792
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/17/2026 15:44
Changes: 07/17/2026 15:44 (56), 07/17/2026 15:45 (1)
Complete: 🔍
Submitter: Eric-d
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #852865: AstrBotDevs AstrBot <= 4.25.5 Improper Link Resolution Before File Access (CWE-59) (by Eric-d)

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