How severe is GHSA-7xcv-9j6c-2fmc?

No CVSS score has been assigned to GHSA-7xcv-9j6c-2fmc yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-7xcv-9j6c-2fmc?

GHSA-7xcv-9j6c-2fmc affects the following packages: modular (PyPI). Ecosystems affected: PyPI.

How do I fix GHSA-7xcv-9j6c-2fmc?

Update modular to 25.6.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-7xcv-9j6c-2fmc is resolved across your whole dependency graph.

How do I detect GHSA-7xcv-9j6c-2fmc in my PyPI dependencies?

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

How do I mitigate GHSA-7xcv-9j6c-2fmc if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against GHSA-7xcv-9j6c-2fmc?

O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-7xcv-9j6c-2fmc can be triaged on real exposure rather than presence alone.

Is GHSA-7xcv-9j6c-2fmc actively exploited in the wild?

No public exploit code has been indexed for GHSA-7xcv-9j6c-2fmc yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for GHSA-7xcv-9j6c-2fmc?

GHSA-7xcv-9j6c-2fmc has an EPSS (Exploit Prediction Scoring System) score of 0.3%, placing it in the 21th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

When was GHSA-7xcv-9j6c-2fmc published, and has it been updated?

GHSA-7xcv-9j6c-2fmc was published on November 18, 2025 and was last updated on July 13, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐍 PyPI

Not in CISA KEV

GHSA-7xcv-9j6c-2fmc — modular

Fix: modular/modular@1062005

GHSA-7xcv-9j6c-2fmc is a remote code execution vulnerability in modular. A fix is available for modular — see the affected versions and patch details below.

Modular Max Serve has Unsafe Deserialization vulnerability

Also known asCVE-2025-60455PYSEC-2025-253PYSEC-2026-427

Published

Nov 18, 2025

Updated

Jul 13, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Sep 24, 2026 · OSV.dev, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

A successful exploit gives an attacker total control of the affected component, not partial access.
CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-7xcv-9j6c-2fmc.

EPSS Exploitation Probability

via FIRST.org ↗

0.3%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs21th percentile — riskier than 21% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Real-World Exposure

1 pkg affected

🐍modular

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

Unsafe Deserialization vulnerability in Modular Max Serve before 25.6, specifically when the "--experimental-enable-kvcache-agent" feature is used allowing attackers to execute arbitrary code.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐍PyPI	`modular`	all versions	25.6.0`pip install --upgrade 'modular==25.6.0'`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for modular, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update modular to 25.6.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-7xcv-9j6c-2fmc is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-7xcv-9j6c-2fmc can be triaged on real exposure rather than presence alone.

Tailored to GHSA-7xcv-9j6c-2fmc. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Unsafe Deserialization vulnerability in Modular Max Serve before 25.6, specifically when the "--experimental-enable-kvcache-agent" feature is used allowing attackers to execute arbitrary code.

O3 Security · Impact-Aware SCA

Is GHSA-7xcv-9j6c-2fmc in your dependencies?

O3 Security finds GHSA-7xcv-9j6c-2fmc across PyPI dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

Scan my dependencies How O3 SCA works