Zimbra Collaboration before Kepler 9.0.0 Patch 38 GA allows DOM-based JavaScript injection in the Modern UI.
Conclusion & alert: CVE-2023-50808 is rated Moderate Risk (47.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.51%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-11-21 | 0.69% | 0.51% | -0.18% |
| 2 | 2025-11-18 | 0.54% | 0.69% | +0.16% |
| 3 | 2025-07-04 | — | 0.54% | — |
Full EPSS history (11 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.1 | 3.1 | MEDIUM |
|
2.8 | 2.7 | [email protected] |
| 9.1 | 3.1 | CRITICAL |
|
3.9 | 5.2 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| zimbra | collaboration | < 9.0.0 | cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:-:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p0:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p1:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p10:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p11:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p12:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p13:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p14:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p15:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p16:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p19:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p2:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p20:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p21:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p23:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p24:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p24.1:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p25:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p26:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p27:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p3:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p30:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p31:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p32:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p33:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p34:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p35:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p36:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p37:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p38:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p4:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p5:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p6:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p7:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p7.1:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p8:*:*:*:*:*:* |
| zimbra | collaboration | 9.0.0 | cpe:2.3:a:zimbra:collaboration:9.0.0:p9:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Security_Center | Release Notes |
| https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P38 | Release Notes |
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | Vendor Advisory |