CVE-2026-6604: Agentscope AgentScope Vulnerable To Server-Side Request Vulnerability

MODERATE
Advisory Identifier: GHSA-659x-hm75-hpv7
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CVSS 7.3
CWE-918
Published
Advisory Summary

CVE-2026-6604 is a MODERATE (CVSS 7.3) agentscope vulnerable to server-side request vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting Agentscope libraries in the PyPI ecosystem. The issue involves agentscope vulnerable to server-side request forgery. Remediation is available in the latest vendor maintenance releases.

CVE-2026-6604 at a Glance

CVE Identifier CVE-2026-6604
GHSA Identifier GHSA-659x-hm75-hpv7
Severity MODERATE
CVSS v3.1 Base Score 7.3
CWE Classification CWE-918: Server-Side Request Forgery (SSRF)
Affected Product Agentscope
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix CVE-2026-6604

To remediate this vulnerability, upgrade all affected Agentscope dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

agentscope fixed: Latest secure release 
pip install agentscope>=Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show agentscope

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-6604, inspect your installed packages using pip:

pip show agentscope

Analyze the terminal output to locate any version of Agentscope in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The pip show agentscope command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-918: Server-Side Request Forgery (SSRF), where the web server receives a url or similar request from an upstream component and retrieves the contents of this url, but it does not sufficiently ensure that the request is being sent to the expected destination. In Agentscope, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

A vulnerability was identified in modelscope agentscope up to 1.0.18. Affected by this issue is the function _parse_url/prepare_image/openai_audio_to_text of the file src/agentscope/tool/_multi_modality/_openai_tools.py of the component Cloud Metadata Endpoint. Such manipulation of the argument image_url/audio_file_url leads to server-side request forgery. The attack may be performed from remote. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVE-2026-6604 Affected Agentscope Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
agentscope
pypi/agentscope
PyPI
≤ 1.0.18

References

NVD — CVE-2026-6604 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-6604
Agentscope Source Repository REPOSITORY
https://gist.github.com/YLChen-007/e3e0741b297d8c2ffca59b6350d4c657
Agentscope Source Repository REPOSITORY
https://github.com/agentscope-ai/agentscope
vuldb.com/submit/792224 WEB
https://vuldb.com/submit/792224
vuldb.com/vuln/358239 WEB
https://vuldb.com/vuln/358239
vuldb.com/vuln/358239/cti WEB
https://vuldb.com/vuln/358239/cti

Frequently Asked Questions

What is CVE-2026-6604?
CVE-2026-6604 is a security vulnerability in Agentscope involving AgentScope vulnerable to Server-Side Request Forgery under CWE-918: Server-Side Request Forgery (SSRF).
Which Agentscope versions are affected?
Affected versions include releases prior to current release patches across affected packages: agentscope.
What version fixes CVE-2026-6604?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is agentscope affected?
Yes, agentscope is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2026-6604?
CVE-2026-6604 has a CVSS v3.1 base score of 7.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2026-6604?
CVE-2026-6604 is classified under CWE-918: Server-Side Request Forgery (SSRF) (The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.).
How can I check PyPI dependencies for CVE-2026-6604?
Run the dependency tree command: 'pip show agentscope'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-659x-hm75-hpv7",
  "modified" : "2026-04-28T23:19:28Z",
  "published" : "2026-04-20T06:31:27Z",
  "aliases" : [ "CVE-2026-6604" ],
  "summary" : "AgentScope vulnerable to Server-Side Request Forgery",
  "details" : "A vulnerability was identified in modelscope agentscope up to 1.0.18. Affected by this issue is the function _parse_url/prepare_image/openai_audio_to_text of the file src/agentscope/tool/_multi_modality/_openai_tools.py of the component Cloud Metadata Endpoint. Such manipulation of the argument image_url/audio_file_url leads to server-side request forgery. The attack may be performed from remote. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "agentscope"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.0.18"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-6604"
  }, {
    "type" : "WEB",
    "url" : "https://gist.github.com/YLChen-007/e3e0741b297d8c2ffca59b6350d4c657"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/agentscope-ai/agentscope"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/submit/792224"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/vuln/358239"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/vuln/358239/cti"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-918" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-28T23:19:28Z",
    "nvd_published_at" : "2026-04-20T05:16:15Z"
  }
}