CVE-2023-37580 Exploited in the Wild — Zimbra Collaboration

Vendor	Product	Version	Status
n/a	n/a	n/a	Affected

Known Exploited Vulnerability Sources

Catalogues that list this CVE as a known exploited vulnerability.

Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.

Source	Added
CISA First	2023-07-27 00:00 UTC

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner	Reference	Detected
Nuclei	https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-37580.yaml	Apr 25, 2025

Virtual Patch

Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.

Not available

KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.

Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.

Request Enterprise Access Learn About Virtual Patches

CVSS Scores

CVSS v3.1 6.1 Medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation Status

Exploited in the wild

Recorded 2023-07-27 00:00:00 UTC · CISA

Proof of concept available

Recorded 2026-06-12 14:20:40 UTC · Nuclei Templates

Weaknesses (CWE)

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Scanner Integrations

Nuclei, Metasploit, and other scanner references for this CVE are listed on the Detection tab.

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

Zimbra Collaboration Suite (ZCS) v.8.8.15 - Cross-Site Scripting

nuclei · Created Unknown

Timeline

Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.

12 Jun 2026 14:20 UTC about 2 months ago

12 Jun 2026 14:20 UTC · about 2 months ago

Public PoC available

Public proof-of-concept code published
25 Apr 2025 00:00 UTC over 1 year ago

25 Apr 2025 00:00 UTC · over 1 year ago

Nuclei template available

Scanner coverage available
31 Jul 2023 00:00 UTC almost 3 years ago

31 Jul 2023 00:00 UTC · almost 3 years ago

CVE published

Vulnerability disclosed publicly
27 Jul 2023 00:00 UTC about 3 years ago

27 Jul 2023 00:00 UTC · about 3 years ago

Added to CISA KEV

Listed in the CISA Known Exploited Vulnerabilities catalog
7 Jul 2023 00:00 UTC about 3 years ago

7 Jul 2023 00:00 UTC · about 3 years ago

CVE ID reserved

Identifier reserved by the CNA

Automate This Intelligence with the Pro API

Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

View Pro Pricing View API Docs

Pro API Example

GET /api/v2/pro/kevs/CVE-2023-37580

{
  "cve_id": "CVE-2023-37580",
  "title": "Zimbra Collaboration (ZCS) 8 before 8.8.15 Patch 41 allows XSS in the Zimbra ...",
  "affected_vendor": "Zimbra",
  "affected_product": "Zimbra Collaboration",
  "affected_versions": [
    { "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
  ],
  "confidence": "Confirmed",
  "cvss_score": 6.1,
  "epss_score": 0.54538,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "...": "Pro API fields" },
  "proof_of_concepts": [ "..." ],
  "scanner_integrations": [ "..." ]
}

The free JSON API returns basic KEV fields only. Confidence, telemetry, and artifact enrichment require Pro API access.

CVE-2023-37580

At a Glance

Affected Versions

CVE References