CVE-2026-123374
Apache Roller: Deserialization of untrusted data in weblog update ping responses
Description
Deserialization of Untrusted Data vulnerability in Apache Roller. When Roller sends a weblog update ping, its XML-RPC client deserializes Java object data contained in the ping target's response, so a party that controls that response can run code in the Roller server process. This issue affects Apache Roller from 4.0 through 6.1.6. Users are recommended to upgrade to version 6.1.7, which removes the unsafe deserialization.
INFO
Published Date :
Nov. 11, 2026, 1:17 p.m.
Last Modified :
Nov. 11, 2026, 1:17 p.m.
Remotely Exploit :
No
Source :
[email protected]
Solution
- Upgrade Apache Roller to version 6.1.7.
- Remove unsafe deserialization code.
- Validate XML-RPC client responses.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-123374.
| URL | Resource |
|---|---|
| https://github.com/apache/roller/pull/236 | |
| https://lists.apache.org/thread/577orljt8673gcvcv6nvwo2tnvykyxmt |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-123374 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-123374
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-123374 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-123374 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Nov. 11, 2026
Action Type Old Value New Value Added Description Deserialization of Untrusted Data vulnerability in Apache Roller. When Roller sends a weblog update ping, its XML-RPC client deserializes Java object data contained in the ping target's response, so a party that controls that response can run code in the Roller server process. This issue affects Apache Roller from 4.0 through 6.1.6. Users are recommended to upgrade to version 6.1.7, which removes the unsafe deserialization. Added CWE CWE-502 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/123xxx/CVE-2026-123374.json">CVE-2026-123374</a> Added Reference https://github.com/apache/roller/pull/236 Added Reference https://lists.apache.org/thread/577orljt8673gcvcv6nvwo2tnvykyxmt