CVE-2025-3048Public exploitNetwork attack vector

Local file disclosure via followed build symlinks

Published Mar 31, 2025 · Updated Oct 14, 2025

Path traversal in AWS SAM CLI before 1.134.0 allows local users to read symlink target contents copied from container builds. During post-build cache population, osutils.copytree reaches shutil.copy2 without disabling symlink following, so targets become regular files or directories in .aws-sam/cache. Exposure requires a container build whose artifacts contain a symlink; the copied data remains limited to the local workspace and does not affect AWS services or production resources.

CVSS severity6.9
Medium
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in AWS SAM CLI before 1.134.0 allows local users to read symlink target contents copied from container builds. During post-build cache population, osutils.copytree reaches shutil.copy2 without disabling symlink following, so targets become regular files or directories in .aws-sam/cache. Exposure requires a container build whose artifacts contain a symlink; the copied data remains limited to the local workspace and does not affect AWS services or production resources.

The record

CVE
CVE-2025-3048
Published
Mar 31, 2025
Updated
Oct 14, 2025
Vendor
Amazon Web Services
Product
AWS SAM CLI
Classifications
CWE-22, CWE-497, CAPEC-126, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 31, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.9.0 <1.134.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Amazon Web Services · AWS SAM CLIversion=1.9.0 <1.134.0

Published CVSS scores

6.9Amazon Web ServicesCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-497Exposure of Sensitive System Information to an Unauthorized Control Sphere
CAPEC-126Path Traversal
T1204.002User Execution: Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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