PatchTheCVECVE-2019-18957: Microstrategy Library in MicroStrategy before 2019 before 11.1.3 has reflected XSS.
CVE-2019-18957 is a medium-severity flaw (CVSS 6.1) affecting microstrategy library. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Microstrategy Library in MicroStrategy before 2019 before 11.1.3 has reflected XSS.
Why this priority
- EPSS top 8%: very likely to be exploited
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.1 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 4.9% (top 8%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2019-11-14 |
| 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
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Nuclei scan template: MicroStrategy Library <11.1.3 - Cross-Site Scripting
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-2019-18957?
microstrategy library: upgrade to 11.1.3. Exact commands for each OS are on this page.
Is CVE-2019-18957 being exploited?
CVE-2019-18957 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-2019-18957 affect?
CVE-2019-18957 affects microstrategy library. Severity is medium (CVSS 6.1). Microstrategy Library in MicroStrategy before 2019 before 11.1.3 has reflected XSS.
How urgent is CVE-2019-18957?
Priority 44/100. EPSS top 8%: very likely to be exploited