Cross Site Scripting vulnerability in Zimbra ZCS v.8.8.15 allows a remote authenticated…
Priority CRITICAL 98Exploited in the wildCWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
Cross Site Scripting vulnerability in Zimbra ZCS v.8.8.15 allows a remote authenticated attacker to execute arbitrary code via a crafted script to the /h/autoSaveDraft function.
Why it matters now
Exploitation Active In CISA KEV since 2025-02-25CISA due date 2025-03-18
EPSS 0.77266 99th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 41
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:-:*:*:*:*:*:* | 8.8.15 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p1:*:*:*:*:*:* | 8.8.15 p1 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p10:*:*:*:*:*:* | 8.8.15 p10 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p11:*:*:*:*:*:* | 8.8.15 p11 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p12:*:*:*:*:*:* | 8.8.15 p12 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p13:*:*:*:*:*:* | 8.8.15 p13 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p14:*:*:*:*:*:* | 8.8.15 p14 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p15:*:*:*:*:*:* | 8.8.15 p15 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p16:*:*:*:*:*:* | 8.8.15 p16 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p17:*:*:*:*:*:* | 8.8.15 p17 | Vulnerable | Synacor |
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:-:*:*:*:*:*:* Versions 8.8.15 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p1:*:*:*:*:*:* Versions 8.8.15 p1 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p10:*:*:*:*:*:* Versions 8.8.15 p10 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p11:*:*:*:*:*:* Versions 8.8.15 p11 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p12:*:*:*:*:*:* Versions 8.8.15 p12 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p13:*:*:*:*:*:* Versions 8.8.15 p13 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p14:*:*:*:*:*:* Versions 8.8.15 p14 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p15:*:*:*:*:*:* Versions 8.8.15 p15 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p16:*:*:*:*:*:* Versions 8.8.15 p16 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p17:*:*:*:*:*:* Versions 8.8.15 p17 Vulnerable ·Synacor
Show 31 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p18:*:*:*:*:*:* | 8.8.15 p18 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p19:*:*:*:*:*:* | 8.8.15 p19 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p2:*:*:*:*:*:* | 8.8.15 p2 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p20:*:*:*:*:*:* | 8.8.15 p20 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p21:*:*:*:*:*:* | 8.8.15 p21 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p22:*:*:*:*:*:* | 8.8.15 p22 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p23:*:*:*:*:*:* | 8.8.15 p23 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p24:*:*:*:*:*:* | 8.8.15 p24 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p25:*:*:*:*:*:* | 8.8.15 p25 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p26:*:*:*:*:*:* | 8.8.15 p26 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p27:*:*:*:*:*:* | 8.8.15 p27 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p28:*:*:*:*:*:* | 8.8.15 p28 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p29:*:*:*:*:*:* | 8.8.15 p29 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p3:*:*:*:*:*:* | 8.8.15 p3 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p30:*:*:*:*:*:* | 8.8.15 p30 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p31:*:*:*:*:*:* | 8.8.15 p31 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p31.1:*:*:*:*:*:* | 8.8.15 p31.1 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p32:*:*:*:*:*:* | 8.8.15 p32 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p33:*:*:*:*:*:* | 8.8.15 p33 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p34:*:*:*:*:*:* | 8.8.15 p34 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p35:*:*:*:*:*:* | 8.8.15 p35 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p36:*:*:*:*:*:* | 8.8.15 p36 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p37:*:*:*:*:*:* | 8.8.15 p37 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p38:*:*:*:*:*:* | 8.8.15 p38 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p39:*:*:*:*:*:* | 8.8.15 p39 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p4:*:*:*:*:*:* | 8.8.15 p4 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p5:*:*:*:*:*:* | 8.8.15 p5 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p6:*:*:*:*:*:* | 8.8.15 p6 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p7:*:*:*:*:*:* | 8.8.15 p7 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p8:*:*:*:*:*:* | 8.8.15 p8 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p9:*:*:*:*:*:* | 8.8.15 p9 | Vulnerable | Synacor |
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p18:*:*:*:*:*:* Versions 8.8.15 p18 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p19:*:*:*:*:*:* Versions 8.8.15 p19 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p2:*:*:*:*:*:* Versions 8.8.15 p2 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p20:*:*:*:*:*:* Versions 8.8.15 p20 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p21:*:*:*:*:*:* Versions 8.8.15 p21 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p22:*:*:*:*:*:* Versions 8.8.15 p22 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p23:*:*:*:*:*:* Versions 8.8.15 p23 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p24:*:*:*:*:*:* Versions 8.8.15 p24 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p25:*:*:*:*:*:* Versions 8.8.15 p25 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p26:*:*:*:*:*:* Versions 8.8.15 p26 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p27:*:*:*:*:*:* Versions 8.8.15 p27 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p28:*:*:*:*:*:* Versions 8.8.15 p28 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p29:*:*:*:*:*:* Versions 8.8.15 p29 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p3:*:*:*:*:*:* Versions 8.8.15 p3 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p30:*:*:*:*:*:* Versions 8.8.15 p30 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p31:*:*:*:*:*:* Versions 8.8.15 p31 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p31.1:*:*:*:*:*:* Versions 8.8.15 p31.1 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p32:*:*:*:*:*:* Versions 8.8.15 p32 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p33:*:*:*:*:*:* Versions 8.8.15 p33 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p34:*:*:*:*:*:* Versions 8.8.15 p34 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p35:*:*:*:*:*:* Versions 8.8.15 p35 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p36:*:*:*:*:*:* Versions 8.8.15 p36 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p37:*:*:*:*:*:* Versions 8.8.15 p37 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p38:*:*:*:*:*:* Versions 8.8.15 p38 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p39:*:*:*:*:*:* Versions 8.8.15 p39 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p4:*:*:*:*:*:* Versions 8.8.15 p4 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p5:*:*:*:*:*:* Versions 8.8.15 p5 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p6:*:*:*:*:*:* Versions 8.8.15 p6 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p7:*:*:*:*:*:* Versions 8.8.15 p7 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p8:*:*:*:*:*:* Versions 8.8.15 p8 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p9:*:*:*:*:*:* Versions 8.8.15 p9 Vulnerable ·Synacor
Remediation
No fixed version listed by the sources yet.
Timeline
- 2025-02-25 Added to CISA KEV
- 2026-10-02 Threatist record created from CVE-2023-34192
- 2026-10-03 Alias added: GHSA-77v2-mcx8-5hqm
References
More Synacor Zimbra Collaboration Suite vulnerabilities
- TI-2024-30554 The postjournal service in Zimbra Collaboration (ZCS) before 8.8.15 Patch 46, 9 before… KEVCVSS 3.1CRITICAL 10.0
- TI-2022-19841 An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0. KEVCVSS 3.1CRITICAL 9.8
- TI-2022-17239 Zimbra Collaboration Suite (ZCS) 8.8.15 and 9.0 has mboximport functionality that… KEVCVSS 3.1CRITICAL 9.8
- TI-2022-10792 Zimbra Collaboration (aka ZCS) 8.8.15 and 9.0 allows an unauthenticated attacker to… KEVCVSS 3.1CRITICAL 9.8
- TI-2020-06312 Zimbra Collaboration Suite (ZCS) before 8.8.15 Patch 7 allows SSRF when WebEx zimlet is… KEVCVSS 3.1CRITICAL 9.8
- TI-2019-07076 mailboxd component in Synacor Zimbra Collaboration Suite 8.7.x before 8.7.11p10 has an… KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2023-34192 · CVE Program
- CVE-2023-34192 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-77v2-mcx8-5hqm · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences