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CVE-2021-44026

Roundcube before 1.3.17 and 1.4.x before 1.4.12 is prone to a potential SQL injection via search or search_params.

CVSS 9.8 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.8/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 9.8: +1.47
  • Fresh EPSS: 69.88%: +0.35

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

Sources: 10 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

Mishcon de Reya LLP
Press · 09 Jul 2025, 07:00 · Privacy email service hacking reveals user records - Mishcon de Reya LLP
SC Media
Press · 18 Jun 2025, 07:00 · Over 1M Cock.li user records compromised via Roundcube exploits - SC Media
CyberSecurityNews
Press · 17 Jun 2025, 07:00 · Email Hosting Provider Cock.li Hacked – 1 Million Email Addresses Stolen - CyberSecurityNews
The Register
Press · 21 May 2025, 07:00 · Russia's Fancy Bear sticks its paws in transportation emails - The Register
The Hacker News
Press · 15 May 2025, 07:00 · Russia-Linked APT28 Exploited MDaemon Zero-Day to Hack Government Webmail Servers - The Hacker News
See all 10 source documents
Help Net Security
Press · 07 Aug 2024, 07:00 · Roundcube flaws allow easy email account compromise (CVE-2024-42009, CVE-2024-42008) - Help Net Security
Help Net Security
Press · 13 Feb 2024, 08:00 · Roundcube webmail XSS vulnerability exploited by attackers (CVE-2023-43770) - Help Net Security
SOC Prime
Press · 21 Jun 2023, 07:00 · CVE-2020-35730, CVE-2021-44026, CVE-2020-12641 Exploit Detection: APT28 Group Abuses Roundcube Flaws In Spearphishing Espionage Attacks - SOC Prime
Bitdefender
Press · 21 Jun 2023, 07:00 · Russian APT Group Exposes Vulnerabilities in Open-Source Roundcube Webmail Software - Bitdefender
Recorded Future
Press · 20 Jun 2023, 07:00 · BlueDelta Exploits Ukrainian Government Roundcube Mail Servers to Support Espionage Activities - Recorded Future

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 8.8 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

1

Public exploit entries / repo candidates

See 1 repos with metrics
RepositoryStarsForksLanguageUpdated
skyllpro/CVE-2021-44026-PoC00Python20 Apr 2025, 07:32
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 9.8; EPSS 69.9%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:32.072469+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
19 Nov 2021, 03:47
First press mention
20 Jun 2023, 07:00
Added to the CISA KEV catalog
22 Jun 2023, 00:00
Latest press mention
09 Jul 2025, 07:00
Score calculated
05 Nov 2026, 13:58
PoCs on GitHub
1 repositories