OS command injection in Ahsay AhsayCBS Replication Receiver
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-77.
Summary
Ahsay AhsayCBS versions up to 9.15.2.69 and up to 10.3.4.44 contain an OS command injection flaw (CWE-78) in the Replication Receiver component's /rps/api/json/UpdateReceivers.do endpoint. A crafted value in the random argument lets an unauthenticated remote attacker run operating system commands on the server. A public exploit has been published, and CISA reports active exploitation and lists the flaw in its Known Exploited Vulnerabilities catalog.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
A flaw has been found in Ahsay AhsayCBS up to 9.15.2.69/10.3.4.44. This vulnerability affects unknown code of the file /rps/api/json/UpdateReceivers.do of the component Replication Receiver. Executing a manipulation of the argument random can lead to os command injection. It is possible to launch the attack remotely. The exploit has been published and may be used. Upgrading to version 9.15.2.70 and 10.3.4.45 is able to resolve this issue. Upgrading the affected component is advised. The initial patch did not fix the security vulnerability properly. An update of the CVE entry to reflect this became necessary.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Ahsay | AhsayCBS | 9.15.2.0; 9.15.2.1; 9.15.2.2; 9.15.2.3; 9.15.2.4; 9.15.2.5; 9.15.2.6; 9.15.2.7; 9.15.2.8; 9.15.2.9; 9.15.2.10; 9.15.2.11; 9.15.2.12; 9.15.2.13; 9.15.2.14; 9.15.2.15; 9.15.2.16; 9.15.2.17; 9.15.2.18; 9.15.2.19; 9.15.2.20; 9.15.2.21; 9.15.2.22; 9.15.2.23; 9.15.2.24; 9.15.2.25; 9.15.2.26; 9.15.2.27; 9.15.2.28; 9.15.2.29; 9.15.2.30; 9.15.2.31; 9.15.2.32; 9.15.2.33; 9.15.2.34; 9.15.2.35; 9.15.2.36; 9.15.2.37; 9.15.2.38; 9.15.2.39; 9.15.2.40; 9.15.2.41; 9.15.2.42; 9.15.2.43; 9.15.2.44; 9.15.2.45; 9.15.2.46; 9.15.2.47; 9.15.2.48; 9.15.2.49; 9.15.2.50; 9.15.2.51; 9.15.2.52; 9.15.2.53; 9.15.2.54; 9.15.2.55; 9.15.2.56; 9.15.2.57; 9.15.2.58; 9.15.2.59; 9.15.2.60; 9.15.2.61; 9.15.2.62; 9.15.2.63; 9.15.2.64; 9.15.2.65; 9.15.2.66; 9.15.2.67; 9.15.2.68; 9.15.2.69; 10.3.4.0; 10.3.4.1; 10.3.4.2; 10.3.4.3; 10.3.4.4; 10.3.4.5; 10.3.4.6; 10.3.4.7; 10.3.4.8; 10.3.4.9; 10.3.4.10; 10.3.4.11; 10.3.4.12; 10.3.4.13; 10.3.4.14; 10.3.4.15; 10.3.4.16; 10.3.4.17; 10.3.4.18; 10.3.4.19; 10.3.4.20; 10.3.4.21; 10.3.4.22; 10.3.4.23; 10.3.4.24; 10.3.4.25; 10.3.4.26; 10.3.4.27; 10.3.4.28; 10.3.4.29; 10.3.4.30; 10.3.4.31; 10.3.4.32; 10.3.4.33; 10.3.4.34; 10.3.4.35; 10.3.4.36; 10.3.4.37; 10.3.4.38; 10.3.4.39; 10.3.4.40; 10.3.4.41; 10.3.4.42; 10.3.4.43; 10.3.4.44 | 9.15.2.70, 10.3.4.45 | Patch available | CNA |
- AhsayCBS VendorAhsay Affected 9.15.2.0; 9.15.2.1; 9.15.2.2; 9.15.2.3; 9.15.2.4; 9.15.2.5; 9.15.2.6; 9.15.2.7; 9.15.2.8; 9.15.2.9; 9.15.2.10; 9.15.2.11; 9.15.2.12; 9.15.2.13; 9.15.2.14; 9.15.2.15; 9.15.2.16; 9.15.2.17; 9.15.2.18; 9.15.2.19; 9.15.2.20; 9.15.2.21; 9.15.2.22; 9.15.2.23; 9.15.2.24; 9.15.2.25; 9.15.2.26; 9.15.2.27; 9.15.2.28; 9.15.2.29; 9.15.2.30; 9.15.2.31; 9.15.2.32; 9.15.2.33; 9.15.2.34; 9.15.2.35; 9.15.2.36; 9.15.2.37; 9.15.2.38; 9.15.2.39; 9.15.2.40; 9.15.2.41; 9.15.2.42; 9.15.2.43; 9.15.2.44; 9.15.2.45; 9.15.2.46; 9.15.2.47; 9.15.2.48; 9.15.2.49; 9.15.2.50; 9.15.2.51; 9.15.2.52; 9.15.2.53; 9.15.2.54; 9.15.2.55; 9.15.2.56; 9.15.2.57; 9.15.2.58; 9.15.2.59; 9.15.2.60; 9.15.2.61; 9.15.2.62; 9.15.2.63; 9.15.2.64; 9.15.2.65; 9.15.2.66; 9.15.2.67; 9.15.2.68; 9.15.2.69; 10.3.4.0; 10.3.4.1; 10.3.4.2; 10.3.4.3; 10.3.4.4; 10.3.4.5; 10.3.4.6; 10.3.4.7; 10.3.4.8; 10.3.4.9; 10.3.4.10; 10.3.4.11; 10.3.4.12; 10.3.4.13; 10.3.4.14; 10.3.4.15; 10.3.4.16; 10.3.4.17; 10.3.4.18; 10.3.4.19; 10.3.4.20; 10.3.4.21; 10.3.4.22; 10.3.4.23; 10.3.4.24; 10.3.4.25; 10.3.4.26; 10.3.4.27; 10.3.4.28; 10.3.4.29; 10.3.4.30; 10.3.4.31; 10.3.4.32; 10.3.4.33; 10.3.4.34; 10.3.4.35; 10.3.4.36; 10.3.4.37; 10.3.4.38; 10.3.4.39; 10.3.4.40; 10.3.4.41; 10.3.4.42; 10.3.4.43; 10.3.4.44 Fixed in 9.15.2.70, 10.3.4.45 Patch available CNA
Remediation
Upgrade the affected AhsayCBS installation to version 9.15.2.70 or 10.3.4.45, according to the branch in use. CISA requires U.S. federal agencies to fix this vulnerability by 2026-10-17.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
- Fix · CNA AhsayCBS (Ahsay) Fixed in 9.15.2.70, 10.3.4.45
Timeline
- 2026-10-04 Threatist record created from CVE-2026-105134
- 2026-10-04 Alias added: GHSA-mxj3-2x8q-2rh9
- 2026-10-05 CISA SSVC decision points changed
- 2026-10-14 Added to CISA KEV
- 2026-10-15 Priority changed: MEDIUM → CRITICAL
- 2026-10-15 CISA SSVC decision points changed
- 2026-10-16 EPSS moved to the 90th–95th percentile
- 2026-10-23 EPSS moved to the 95th–99th percentile
- 2026-10-25 EPSS moved to the 99th percentile and above
- 2026-10-26 CVSS score changed · CNA
- 2026-10-26 Fix available: Ahsay/[email protected], Ahsay/[email protected] · CNA
- 2026-10-26 2 new references · CNA
References
More Ahsay Cloud Backup Suite vulnerabilities
- TI-2026-67514 Improper authentication in Ahsay AhsayCBS API KEVCVSS 4.0MEDIUM 6.9
- TI-2019-07579 An insecure file upload and code execution issue was discovered in Ahsay Cloud Backup… CVSS 3.0HIGH 8.8
- TI-2022-17231 Ahsay AhsayCBS 9.1.4.0 allows an authenticated system user to inject arbitrary Java JVM… CVSS 3.1HIGH 7.2
- TI-2019-07578 An issue was discovered in Ahsay Cloud Backup Suite before 8.1.1.50. CVSS 3.0HIGH 7.5
- TI-2020-04766 An insecure file upload and code execution issue was discovered in Ahsay Cloud Backup… CVSS 3.1HIGH 8.8
- TI-2019-07577 An issue was discovered in Ahsay Cloud Backup Suite before 8.1.1.50. CVSS 3.0HIGH 7.5
Sources
- CVE-2026-105134 · CVE Program
- CVE-2026-105134 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-mxj3-2x8q-2rh9 · GitHub Advisory Database · CC BY 4.0
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