Deserialization of Untrusted Data Affecting solr-9 package, versions <9.10.1-r14


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.48% (39th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-CHAINGUARDLATEST-SOLR9-19869339
  • published16 Sept 2026
  • disclosed30 Jun 2026

Introduced: 30 Jun 2026

CVE-2026-55223  (opens in a new tab)
CWE-502  (opens in a new tab)
CWE-915  (opens in a new tab)

How to fix?

Upgrade Chainguard solr-9 to version 9.10.1-r14 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream solr-9 package and not the solr-9 package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

c3p0 is a JDBC Connection pooling library. In versions prior to 0.14.0, c3p0 in combination with other libraries, can compose to a "sink" for deserialization gadgets. The JDBC spec's DataSource.getConnection() and ConnectionPoolDataSource.getPooledConnection() match the getXXX() form, so JavaBean libraries treat them as "properties" assumed safe while they actually call into JDBC drivers. Attackers can thus craft malicious DataSource objects whose property lookups invoke vulnerable drivers, then smuggle them in serialized form to where an application deserializes and auto-resolves bean properties — triggering the attack. This requires a susceptible DataSource/ConnectionPoolDataSource and JDBC driver on the CLASSPATH, plus a carrier that auto-looks-up JavaBean properties on = deserialization, most commonly a collection paired with an Apache commons-beanutils Comparator that sorts by bean properties. c3p0 supplied that susceptible DataSource/ConnectionPoolDataSource, which was an essential component of the trigger. This issue has been fixed in version 0.14.0.

CVSS Base Scores

version 3.1