Page generated: 10 Nov 2026, 23:51 UTC
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CVE-2020-13965

An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. There is XSS via a malicious XML attachment because text/xml is among the allowed types for a preview.

CVSS 6.3 (MEDIUM) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.3/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 6.3: +0.94
  • Fresh EPSS: 76.60%: +0.38

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 5 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

Hacker News
Press · 05 Apr 2021, 15:47 · Maven 3.8.1 – fixes CVE-2021-26291, CVE-2020-13956
Hacker News
Press · 12 Nov 2020, 20:29 · CVE-2020-13954: Apache CXF Reflected XSS in the services listing page via
Hacker News
Press · 02 Nov 2020, 15:29 · Analysing the WebSocket Vulnerability in Apache Tomcat (CVE-2020-13935)
Hacker News
Press · 09 Oct 2020, 20:47 · HttpComponents Client 4.5.13 GA Released – CVE-2020-13956
Hacker News
Press · 12 Jun 2020, 17:57 · OOB to RCE: Exploitation of the Hobbes Functional Interpreter (CVE-2020-13656)

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.3 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

0

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 6.3; EPSS 76.6%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:13.266659+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
09 Jun 2020, 02:45
First press mention
12 Jun 2020, 17:57
Latest press mention
05 Apr 2021, 15:47
Added to the CISA KEV catalog
26 Jun 2024, 00:00
Score calculated
05 Nov 2026, 13:58