PatchTheCVECVE-2026-21783: HCL Traveler is affected by sensitive information disclosure. The application generates some error messages t
CVE-2026-21783 is a medium-severity flaw (CVSS 4.3) affecting traveler. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
HCL Traveler is affected by sensitive information disclosure. The application generates some error messages that provide detailed information about errors and failures, such as internal paths, file names, sensitive tokens, credentials, error codes, or stack traces. Attackers could exploit this information to gain insights into the system's architecture and potentially launch targeted attacks.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 4.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 79%) |
| CISA exploited list | No |
| Weakness | CWE-209 |
| Published | 2026-03-24 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-21783?
traveler: upgrade to 14.5.1.0. Exact commands for each OS are on this page.
Is CVE-2026-21783 being exploited?
CVE-2026-21783 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-21783 affect?
CVE-2026-21783 affects traveler. Severity is medium (CVSS 4.3). HCL Traveler is affected by sensitive information disclosure. The application generates some error messages that provide detailed information about errors and failures, such as internal paths, file names, sensitive tokens, credentials, err
How urgent is CVE-2026-21783?
Priority 20/100. No elevated risk signals yet.