PaperCut MF/NG: Unsafe Dynamic Class Loading in Database Connector
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- Fix
- Fixed in 24.1.10, 25.0.13, 26.0.5
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
PaperCut MF and PaperCut NG, print management applications, are affected. An attacker who can change certain system configuration settings could make the server load and run arbitrary Java code under the privileges of the PaperCut server process.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
An unsafe dynamic class loading vulnerability exists in the database connection utilities of PaperCut MF and PaperCut NG. The application instantiates database driver classes based on configurable driver names without validating against an allowlist of approved drivers. If an attacker can manipulate system configuration parameters, this enables the execution of arbitrary Java bytecode residing on the application classpath under the security context of the PaperCut server process.
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- Record last updated
- CISA remediation deadline
Due date for US federal agencies to patch
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- PaperCut PaperCut MF/NG
fixed in 24.1.10; From 25.0.0 · fixed in 25.0.13; From 26.0.0 · fixed in 26.0.5