CVE-2026-8793
PaperCut NG/MF: Insufficient brute-force protection
Description
PaperCut NG/MF does not properly restrict excessive authentication attempts within its login component. An unauthenticated remote attacker can exploit this vulnerability to perform unrestricted brute-force or credential-stuffing attacks without triggering account lockout or rate-limiting mechanisms in some configurations.
INFO
Published Date :
Aug. 3, 2026, 8:17 a.m.
Last Modified :
Aug. 3, 2026, 8:17 a.m.
Remotely Exploit :
Yes !
Source :
eb41dac7-0af8-4f84-9f6d-0272772514f4
Affected Products
The following products are affected by CVE-2026-8793
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | MEDIUM | eb41dac7-0af8-4f84-9f6d-0272772514f4 | ||||
| CVSS 4.0 | MEDIUM | eb41dac7-0af8-4f84-9f6d-0272772514f4 |
Solution
- Apply vendor patches or security updates to PaperCut NG/MF.
- Configure and enforce strict rate-limiting policies.
- Implement account lockout mechanisms after failed attempts.
- Monitor authentication logs for suspicious activity.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-8793.
| URL | Resource |
|---|---|
| https://www.papercut.com/kb/Main/papercut-ng-mf-security-bulletin-3-aug-2026/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-8793 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-8793
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-8793 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-8793 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by eb41dac7-0af8-4f84-9f6d-0272772514f4
Aug. 03, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'PaperCut', 'product': 'PaperCut NG/MF', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '26.0.3', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] Added Description PaperCut NG/MF does not properly restrict excessive authentication attempts within its login component. An unauthenticated remote attacker can exploit this vulnerability to perform unrestricted brute-force or credential-stuffing attacks without triggering account lockout or rate-limiting mechanisms in some configurations. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-307 Added Reference https://www.papercut.com/kb/Main/papercut-ng-mf-security-bulletin-3-aug-2026/