CVE-2026-31048
An issue in the <code>pickle</code> protocol of Pyro v3.x allows attackers to execute arbitrary code via supplying a crafted pickled string message.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
An issue in the <code>pickle</code> protocol of Pyro v3.x allows attackers to execute arbitrary code via supplying a crafted pickled string message.
- Record
CVE-2026-31048- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-94
- Updated
- 2026-11-02
EUVDEUVD-2026-22059
An issue in the <code>pickle</code> protocol of Pyro v3.x allows attackers to execute arbitrary code via supplying a crafted pickled string message.
- Record
EUVD-2026-22059- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
NVD
An issue in the <code>pickle</code> protocol of Pyro v3.x allows attackers to execute arbitrary code via supplying a crafted pickled string message.
- Record
CVE-2026-31048- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-94
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-31048
An issue in the <code>pickle</code> protocol of Pyro v3.x allows attackers to execute arbitrary code via supplying a crafted pickled string message.
- Record
UBUNTU-CVE-2026-31048- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
pyroUbuntu:16.04:LTS |
All versions, plus listed versions 1:3.14-1.21:3.14-21:3.14-4 |
None known |
pyro4Ubuntu:16.04:LTS |
All versions, plus listed versions 4.23-2 |
None known |
pyroUbuntu:18.04:LTS |
All versions, plus listed versions 1:3.16-11:3.16-2 |
None known |
pyro4Ubuntu:18.04:LTS |
All versions, plus listed versions 4.61-14.62-14.63-1 |
None known |
pyro4Ubuntu:20.04:LTS |
All versions, plus listed versions 4.75-14.76-14.79-1 |
None known |
pyro4Ubuntu:22.04:LTS |
All versions, plus listed versions 4.80-14.81-24.82-1 |
None known |
pyro4Ubuntu:24.04:LTS |
All versions, plus listed versions 4.82-24.82-4 |
None known |
pyro5Ubuntu:24.04:LTS |
All versions, plus listed versions 5.14-25.14-2ubuntu0.1 |
None known |
pyro5Ubuntu:25.10 |
All versions, plus listed versions 5.15-1ubuntu1 |
None known |
pyro5Ubuntu:26.10 |
All versions, plus listed versions 5.15-1ubuntu1 |
None known |
pyro5Ubuntu:26.04:LTS |
All versions, plus listed versions 5.15-1ubuntu1 |
None known |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | Sif-0x01/security-advisories | 2026-04-10 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-31048 is a critical vulnerability (CVSS 9.8) in pyro, published April 13, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.59%, the 48th percentile. No source names a fixed version.