Signal
Critical vulnerabilities found in Zimbra Classic Web Client and Roundcube Webmail
Evidence first: scan the strongest sources, then decide whether to go deeper.
Published 2026-07-10 19:12 UTCUpdated 2026-07-11 06:45 UTC
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cvevulnerabilitysecurity_advisoryincident_response
Trend in the last 24h
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Evidence trail (top sources)
top sources (3 domains)domains are deduped. counts indicate coverage, not truth.3 top sources shown
Overview
Two critical vulnerabilities have been disclosed affecting widely used webmail platforms.
Score total
1.26
Momentum 24h
3
Posts
3
Origins
3
Source types
1
Duplicate ratio
0%
Why now
- Zimbra's vulnerability is newly disclosed and unassigned a CVE, increasing urgency for awareness.
- A proof of concept exists for the Roundcube flaw, raising risk of imminent exploitation.
- Both advisories were updated or published within the last 24 hours, highlighting current threat relevance.
Why it matters
- These vulnerabilities affect widely used webmail platforms critical to business and government communications.
- Exploitation could lead to arbitrary code execution, compromising user sessions and sensitive data.
- Prompt patching is essential to prevent potential attacks leveraging these flaws.
LLM analysis
Topic mix: lowPromo risk: lowSource quality: high
Recurring claims
- Zimbra Classic Web Client has a critical stored cross-site scripting vulnerability allowing malicious code execution via crafted emails.
- Roundcube Webmail is affected by a critical post-authentication remote code execution vulnerability (CVE-2025-49113) via PHP object deserialization.
How sources frame it
- Canadian Centre For Cyber Security: neutral
- The Hacker News: neutral
- SC Media: neutral
Consolidated recent advisories on critical webmail vulnerabilities to emphasize urgency of patching.
All evidence
All evidence
Critical Zimbra Flaw Could Let Crafted Emails Run Malicious Code in User Sessions
thehackernews · thehackernews.com · 2026-07-11 06:45 UTC
Zimbra urges patching of critical XSS vulnerability in Classic Web Client
SC Media · scworld.com · 2026-07-10 21:33 UTC
Vulnerability impacting Roundcube Webmail – CVE-2025-49113 – Update 1
Canadian Centre for Cyber Security - Alerts · cyber.gc.ca · 2026-07-10 19:12 UTC
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Posts loaded: 0Publishers: 3Origin domains: 3Duplicates: -
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Top publishers (this list)
- thehackernews (1)
- SC Media (1)
- Canadian Centre for Cyber Security - Alerts (1)
Top origin domains (this list)
- thehackernews.com (1)
- scworld.com (1)
- cyber.gc.ca (1)