PatchTheCVECVE-2026-102127: An XML parser used by Kiteworks Email Protection Gateway did not restrict external entity references
CVE-2026-102127 is a high-severity flaw (CVSS 7.0) affecting kiteworks. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An XML parser used by Kiteworks Email Protection Gateway did not restrict external entity references. Where an optional, non-default message-processing feature is enabled, a remote and unauthenticated sender could potentially use a crafted message to read files accessible to the gateway service account, including cryptographic key material and credentials, and have them sent to a destination they control.
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.0 (High) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.2% (top 91%) |
| CISA exploited list | No |
| Weakness | CWE-611 |
| Published | 2026-09-30 |
| Last modified | 2026-10-08 |
Last updated 2026-10-08 · 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-2026-102127?
kiteworks: upgrade to 9.5.1. Exact commands for each OS are on this page.
Is CVE-2026-102127 being exploited?
CVE-2026-102127 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-2026-102127 affect?
CVE-2026-102127 affects kiteworks. Severity is high (CVSS 7.0). An XML parser used by Kiteworks Email Protection Gateway did not restrict external entity references. Where an optional, non-default message-processing feature is enabled, a remote and unauthenticated sender could potentially use a crafted
How urgent is CVE-2026-102127?
Priority 32/100. High severity; Remotely exploitable, no login, no user action
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