Unauthenticated command execution via raw request body
Published Aug 3, 2026 · Updated Aug 3, 2026
OS command injection in Sangfor OSM 3.0.0 through 3.0.13 allows remote attackers to execute commands through the portal_login endpoint. DpLoginController.decryption() concatenates the raw request body into an echo pipeline passed by dpExe() to /bin/bash -c despite fragile blacklist escaping. Broad login URI allow rules expose the handler before authentication, granting commands the OSM web process's privileges.
Summary
What happened
OS command injection in Sangfor OSM 3.0.0 through 3.0.13 allows remote attackers to execute commands through the portal_login endpoint. DpLoginController.decryption() concatenates the raw request body into an echo pipeline passed by dpExe() to /bin/bash -c despite fragile blacklist escaping. Broad login URI allow rules expose the handler before authentication, granting commands the OSM web process's privileges.
The record
- CVE
- CVE-2026-18641
- Published
- Aug 3, 2026
- Updated
- Aug 3, 2026
- Vendor
- Sangfor Technologies
- Product
- Operation and Maintenance Security Management System (OSM)
- Classifications
- CWE-78, CWE-77, T1059.004, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 3, 2026CVE publishedPublication date reported by the CVE source.
- Aug 3, 2026Record 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.
- Affected versionversion=3.0.0
- Affected versionversion=3.0.1
- Affected versionversion=3.0.10
- Affected versionversion=3.0.11
- Affected versionversion=3.0.12
- Affected versionversion=3.0.13
- Affected versionversion=3.0.2
- Affected versionversion=3.0.3
- Affected versionversion=3.0.4
- Affected versionversion=3.0.5
- Affected versionversion=3.0.6
- Affected versionversion=3.0.7
- Affected versionversion=3.0.8
- Affected versionversion=3.0.9
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
- Sangfor OSM unauthenticated RCE research issue and safe verifierproof of concept · unverified
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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