CVE-2025-53109
published 2025-07-02CVE-2025-53109: Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP). Versions of Filesystem prior to 0.6.4 or…
PriorityP340high7.3CVSS 4.0
AVNACLATPPRNUIPVCNVINVAHSCHSIHSAHEXCRXIRXARXMAVXMACXMATXMPRXMUIXMVCXMVIXMVAXMSCXMSIXMSAXSXAUXRXVXREXUX
EPSS
0.69%
48.3th percentile
Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP). Versions of Filesystem prior to 0.6.4 or 2025.7.01 could allow access to unintended files via symlinks within allowed directories. Users are advised to upgrade to 0.6.4 or 2025.7.01 resolve.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| modelcontextprotocol | server-filesystem | 0 – 0.6.2 | — |
| modelcontextprotocol | server-filesystem | >= 2025.1.14 < 2025.7.1 | 2025.7.1 |
| modelcontextprotocol | servers | < 0.6.4 | 0.6.4 |
| modelcontextprotocol | servers | < 2025.7.01 | 2025.7.01 |
| msrc | azl3_kernel_6.6.57.1-7_on_azure_linux_3.0 | — | — |
| msrc | azl3_kernel_6.6.64.2-1_on_azure_linux_3.0 | — | — |
CVSS provenance
nvdv4.07.3HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vendor_msrc5.5MEDIUM
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OSV
@modelcontextprotocol/server-filesystem allows for path validation bypass via prefix matching and symlink handling
osv·2025-07-01
CVE-2025-53109 [HIGH] @modelcontextprotocol/server-filesystem allows for path validation bypass via prefix matching and symlink handling
@modelcontextprotocol/server-filesystem allows for path validation bypass via prefix matching and symlink handling
Versions of Filesystem prior to 0.6.3 & 2025.7.1 could allow access to unintended files via symlinks within allowed directories. Users are advised to upgrade to 2025.7.1 to resolve.
Thank you to Elad Beber (Cymulate) for reporting these issues.
GHSA
@modelcontextprotocol/server-filesystem allows for path validation bypass via prefix matching and symlink handling
ghsa·2025-07-01
CVE-2025-53109 [HIGH] CWE-59 @modelcontextprotocol/server-filesystem allows for path validation bypass via prefix matching and symlink handling
@modelcontextprotocol/server-filesystem allows for path validation bypass via prefix matching and symlink handling
Versions of Filesystem prior to 0.6.3 & 2025.7.1 could allow access to unintended files via symlinks within allowed directories. Users are advised to upgrade to 2025.7.1 to resolve.
Thank you to Elad Beber (Cymulate) for reporting these issues.
Microsoft
nommu: pass NULL argument to vma_iter_prealloc()
vendor_msrc·2024-12-10·CVSS 5.5
CVE-2024-53109 [MEDIUM] nommu: pass NULL argument to vma_iter_prealloc()
nommu: pass NULL argument to vma_iter_prealloc()
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: https://learn.micros
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-07-02
Published