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CVE-2025-49131

29
FAUCET Score

CVE-2025-49131 is a critical sandbox escape vulnerability affecting FastGPT versions prior to 4.9.11. The flaw stems from insufficient isolation and overly permissive syscalls within the fastgpt-sandbox container, allowing attackers to bypass intended boundaries. This enables unauthorized reading and writing of arbitrary files and circumvention of Python module import restrictions. With a CVSS score of 9.9 (CRITICAL), this vulnerability is easily exploitable over the network with low privileges and no user interaction, leading to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code, the vulnerability has garnered significant community discussion, indicating high awareness.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.9.11CPE matchmatch criteria
cpe:2.3:a:fastgpt:fastgpt:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.37%
Probability of exploitation in next 30 days
EPSS Percentile
30.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 20th percentile among its peer group of 1,124 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 1.0 Bluesky, 0.5 Mastodon, and 1.6 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / labring/FastGPT/commit/bb810a43a1c70683fab7f5fe993771e930a94426
Patch
github.com / labring/FastGPT/pkgs/container/fastgpt-sandbox
Product
github.com / labring/FastGPT/pull/4958
Issue Tracking
github.com / labring/FastGPT/releases/tag/v4.9.11
Release Notes
github.com / labring/FastGPT/security/advisories/GHSA-f3pf-r3g7-g895
Vendor Advisory