CVE-2026-115731
Report Deserialization Code Execution
Deserialization of untrusted data in the report-processing code of Puppet, as used by Puppet Server, in the affected releases, allows a client that holds any CA-signed agent certificate to execute arbitrary code on the Puppet Server as its service user by submitting a report containing a crafted rich-data type via PUT request. Where the certificate authority autosigns requests without strong verification, an unauthenticated network attacker can obtain such a certificate.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Report Deserialization Code Execution
Deserialization of untrusted data in the report-processing code of Puppet, as used by Puppet Server, in the affected releases, allows a client that holds any CA-signed agent certificate to execute arbitrary code on the Puppet Server as its service user by submitting a report containing a crafted rich-data type via PUT request. Where the certificate authority autosigns requests without strong verification, an unauthenticated network attacker can obtain such a certificate.
- Record
CVE-2026-115731- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Weakness
- CWE-502, CWE-94
- Updated
- 2026-11-06
EUVDEUVD-2026-116495
Deserialization of untrusted data in the report-processing code of Puppet, as used by Puppet Server, in the affected releases, allows a client that holds any CA-signed agent certificate to execute arbitrary code on the Puppet Server as its service user by submitting a report containing a crafted rich-data type via PUT request. Where the certificate authority autosigns requests without strong verification, an unauthenticated network attacker can obtain such a certificate.
- Record
EUVD-2026-116495- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Updated
- 2026-11-06
GitHub AdvisoriesGHSA-4pxx-8frq-9r4j
Deserialization of untrusted data in the report-processing code of Puppet, as used by Puppet...
Deserialization of untrusted data in the report-processing code of Puppet, as used by Puppet Server, in the affected releases, allows a client that holds any CA-signed agent certificate to execute arbitrary code on the Puppet Server as its service user by submitting a report containing a crafted rich-data type via PUT request. Where the certificate authority autosigns requests without strong verification, an unauthenticated network attacker can obtain such a certificate.
- Record
GHSA-4pxx-8frq-9r4j- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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 - Weakness
- CWE-94
- Updated
- 2026-11-03
NVD
Deserialization of untrusted data in the report-processing code of Puppet, as used by Puppet Server, in the affected releases, allows a client that holds any CA-signed agent certificate to execute arbitrary code on the Puppet Server as its service user by submitting a report containing a crafted rich-data type via PUT request. Where the certificate authority autosigns requests without strong verification, an unauthenticated network attacker can obtain such a certificate.
- Record
CVE-2026-115731- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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 - Weakness
- CWE-94, CWE-502
- Updated
- 2026-11-06
OSVDEBIAN-CVE-2026-115731
Deserialization of untrusted data in the report-processing code of Puppet, as used by Puppet Server, in the affected releases, allows a client that holds any CA-signed agent certificate to execute arbitrary code on the Puppet Server as its service user by submitting a report containing a crafted rich-data type via PUT request. Where the certificate authority autosigns requests without strong verification, an unauthenticated network attacker can obtain such a certificate.
- Record
DEBIAN-CVE-2026-115731- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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 - Updated
- 2026-11-07
OSVUBUNTU-CVE-2026-115731
Deserialization of untrusted data in the report-processing code of Puppet, as used by Puppet Server, in the affected releases, allows a client that holds any CA-signed agent certificate to execute arbitrary code on the Puppet Server as its service user by submitting a report containing a crafted rich-data type via PUT request. Where the certificate authority autosigns requests without strong verification, an unauthenticated network attacker can obtain such a certificate.
- Record
UBUNTU-CVE-2026-115731- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Updated
- 2026-11-05
OSVAZL-112717 No score
CVE-2026-115731 affecting package puppet 7.34.0-1
Deserialization of untrusted data in the report-processing code of Puppet, as used by Puppet Server, in the affected releases, allows a client that holds any CA-signed agent certificate to execute arbitrary code on the Puppet Server as its service user by submitting a report containing a crafted rich-data type via PUT request. Where the certificate authority autosigns requests without strong verification, an unauthenticated network attacker can obtain such a certificate.
- Record
AZL-112717- Updated
- 2026-11-07
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
puppetAzure Linux:3 |
through 7.34.0-1 | None known |
puppet-agentDebian:12 |
before 7.23.0-1+deb12u1, plus listed versions 7.23.0-1 |
7.23.0-1+deb12u1 |
puppet-agentDebian:13 |
before 8.10.0-5+deb13u1, plus listed versions 8.10.0-5 |
8.10.0-5+deb13u1 |
puppetUbuntu:14.04:LTS |
All versions, plus listed versions 3.2.4-2ubuntu23.3.1-1ubuntu13.3.1-1ubuntu23.3.1-1ubuntu33.4.2-1 Show 5 moreShow less3.4.3-13.4.3-1ubuntu13.4.3-1ubuntu1.13.4.3-1ubuntu1.23.4.3-1ubuntu1.3 |
None known |
puppetUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 3.7.2-5ubuntu23.8.4-1ubuntu13.8.5-1ubuntu13.8.5-23.8.5-2ubuntu0.13.8.5-2ubuntu0.1+esm1 |
None known |
puppetUbuntu:18.04:LTS |
All versions, plus listed versions 4.10.4-2ubuntu14.10.4-2ubuntu24.10.4-2ubuntu35.4.0-2ubuntu3 |
None known |
puppetUbuntu:20.04:LTS |
All versions, plus listed versions 5.4.0-2ubuntu35.5.10-4ubuntu3 |
None known |
puppetUbuntu:22.04:LTS |
All versions, plus listed versions 5.5.22-1ubuntu15.5.22-45.5.22-4ubuntu0.2 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | CVE List, EUVD, NVD, OSV | |
| affected, aliases, facts, references | OSV | |
| affected, aliases, references | EUVD, NVD, OSV | |
| aliases, cwes, products, published, references, severity, title | CVE List, EUVD | |
| first indexed | GitHub Advisories |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-115731 is a critical vulnerability (CVSS 9.4) in Perforce Puppet Enterprise, published November 3, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.37%, the 30th percentile. Fixed in puppet-agent 7.23.0-1+deb12u1.