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MEDIUM severity

CVE-2024-8556 — agentscope

MEDIUM

CVE-2024-8556 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in agentscope. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

AgentScope stored cross-site scripting (XSS) vulnerability

Also known asPYSEC-2026-1076
Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
None indexed
Exploitation data as of Nov 8, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for CVE-2024-8556.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs37th percentile — riskier than 37% of all scored CVEsHighest risk
0.00%0.31%0.62%0.93%0.2%0.4%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐍agentscope

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

A stored cross-site scripting (XSS) vulnerability exists in modelscope/agentscope, as of the latest commit 21161fe on the main branch. The vulnerability occurs in the view for inspecting detailed run information, where a user-controllable string (run ID) is appended and rendered as HTML. This allows an attacker to execute arbitrary JavaScript code in the context of the user's browser.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
🐍PyPIagentscopeall versionsNo fix

Affected Products

1 product · 1 configurations
Application
agentscopemodelscope
≤ 2024-08-09
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for agentscope, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of agentscope for CVE-2024-8556. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

A stored cross-site scripting (XSS) vulnerability exists in modelscope/agentscope, as of the latest commit 21161fe on the main branch. The vulnerability occurs in the view for inspecting detailed run information, where a user-controllable string (run ID) is appended and rendered as HTML. This allows an attacker to execute arbitrary JavaScript code in the context of the user's browser.
O3 Security · Impact-Aware SCA

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CVE-2024-8556: agentscope XSS (Medium 6.1)