Page generated: 09 Nov 2026, 05:14 UTC
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CVE-2026-82078

An unsafe dynamic class loading vulnerability exists in the database connection utilities of PaperCut MF and PaperCut NG. The application instantiates database driver classes based on configurable driver names without validating against an allowlist of approved drivers. If an att…

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An unsafe dynamic class loading vulnerability exists in the database connection utilities of PaperCut MF and PaperCut NG. The application instantiates database driver classes based on configurable driver names without validating against an allowlist of approved drivers. If an attacker can manipulate system configuration parameters, this enables the execution of arbitrary Java bytecode residing on the application classpath under the security context of the PaperCut server process.
CVSS 9.4 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
1.4/10
REALITY · THREAT PRIORITY
8.7/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 9.4: +1.41
  • Fresh EPSS: 63.05%: +0.32

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

Sources: 26 documents and public datasets.

Hype components

Headline sample (25%)
30/100
Press, 30 days (60%)
10/100
Grounded branding (15%)
0/100
HYPE TOTAL14/100

Sources and documents

watchTowr Labs
Press · 09 Oct 2026, 17:31 · Death By A Thousand PaperCuts (PaperCut Pre-Auth RCE Chain and Patch Bypasses WT-2026-0141-0144/CVE-2026-82077/CVE-2026-82078/CVE-2026-81578)
watchTowr Labs
Press · 09 Oct 2026, 07:00 · Death By A Thousand PaperCuts (PaperCut Pre-Auth RCE Chain and Patch Bypasses WT-2026-0141-0144/CVE-2026-82077/CVE-2026-82078/CVE-2026-81578) - watchTowr Labs
SC Media
Press · 30 Sep 2026, 07:00 · Stop patching by score – and start patching by authority - SC Media
The Hacker News
Press · 11 Sep 2026, 07:00 · PaperCut Replaces Emergency Patches With Fixes for Two Actively Exploited Flaws - The Hacker News
The Hacker News
Press · 10 Sep 2026, 07:00 · PaperCut Attacker Uses Hundreds of AI Agents to Compromise 440+ Instances - The Hacker News
See all 26 source documents
Arctic Wolf
Press · 09 Sep 2026, 17:40 · URGENT UPDATE: Active Exploitation of Two Chained PaperCut NG/MF Vulnerabilities CVE-2026-81578 and CVE-2026-82078 - Arctic Wolf
Recorded Future
Press · 08 Sep 2026, 07:00 · August 2026 CVE Landscape - Recorded Future
The Hacker News
Press · 05 Sep 2026, 07:00 · Attackers Exploit PaperCut Flaws to Steal Credentials From Schools and Universities - The Hacker News
SOC Prime
Press · 02 Sep 2026, 07:00 · CVE-2026-81578: Exploited PaperCut Authentication Bypass Chains to Pre-Auth RCE - SOC Prime
Security Affairs
Press · 01 Sep 2026, 07:00 · U.S. CISA adds PaperCut NG/MF flaws to its Known Exploited Vulnerabilities catalog - Security Affairs
SecurityWeek
Press · 01 Sep 2026, 07:00 · PaperCut Exploitation Escalates to Active Intrusions - SecurityWeek
BleepingComputer
Press · 01 Sep 2026, 07:00 · Recently patched PaperCut zero-days used in data theft attacks - BleepingComputer
SOCRadar
Press · 31 Aug 2026, 07:00 · PaperCut RCE Chain: CVE-2026-82078 Exploited - SOCRadar
SecurityWeek
Press · 31 Aug 2026, 07:00 · More Details Emerge on Exploited PaperCut Vulnerabilities - SecurityWeek
Help Net Security
Press · 31 Aug 2026, 07:00 · Attackers plant remote access tools on compromised PaperCut servers - Help Net Security
CyberSecurityNews
Press · 31 Aug 2026, 07:00 · CISA Warns of Multiple PaperCut NG/MF Vulnerabilities Actively Exploited in Attacks - CyberSecurityNews
Cybersecurity Dive
Press · 31 Aug 2026, 07:00 · PaperCut issues emergency patches as threat actors target chained vulnerabilities - Cybersecurity Dive
shattered.io
Press · 31 Aug 2026, 07:00 · PaperCut Zero-Day CVE-2026-81578/82078 Hits CISA KEV - shattered.io
Hong Kong Computer Emergency Response Team Coordination Centre
Press · 31 Aug 2026, 07:00 · PaperCut Multiple Vulnerabilities - Hong Kong Computer Emergency Response Team Coordination Centre
The Record from Recorded Future News
Press · 28 Aug 2026, 07:00 · PaperCut warns of hackers using printer management software flaw in attacks - The Record from Recorded Future News
SC Media
Press · 28 Aug 2026, 07:00 · PaperCut issues emergency patches for actively exploited critical vulnerability - SC Media
The Hacker News
Press · 28 Aug 2026, 07:00 · PaperCut Zero-Day Exploited in Attacks, Affecting All NG and MF Versions - The Hacker News
The Hacker News
Press · 28 Aug 2026, 07:00 · Attackers Chain Two PaperCut Flaws to Execute Code Without Authentication - The Hacker News
Rapid7
Press · 28 Aug 2026, 07:00 · PaperCut NG/MF Critical Zero-Day Exploited in the Wild - Rapid7
BleepingComputer
Press · 28 Aug 2026, 07:00 · PaperCut releases second emergency patch for exploited flaws - BleepingComputer
Help Net Security
Press · 27 Aug 2026, 07:00 · PaperCut NG/MF vulnerabilities exploited in zero-day attacks - Help Net Security

Score evolution

● Hype   ● Reality

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

First record: hype 1.4 · reality 8.7 (2026-11-02 15:14). 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 9.4; EPSS 63.0%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, high 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 14:00:27.286257+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
27 Aug 2026, 07:00
Published
28 Aug 2026, 11:45
Added to the CISA KEV catalog
31 Aug 2026, 00:00
Latest press mention
09 Oct 2026, 17:31
Score calculated
05 Nov 2026, 14:00