CVE-2026-71244Network attack vector

Credential disclosure via redirected IMAP test connection

Published Aug 5, 2026 · Updated Aug 5, 2026

Credential disclosure in Paperless-ngx allows remote authenticated users to expose stored IMAP passwords or OAuth tokens. MailAccountViewSet.test reuses an existing account's stored secret when a masked password is submitted but accepts caller-controlled IMAP connection settings. Object-level change_mailaccount permission is sufficient to redirect the authenticated test connection to an attacker-controlled IMAP host.

CVSS severityUnavailable
Unscored
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Credential disclosure in Paperless-ngx allows remote authenticated users to expose stored IMAP passwords or OAuth tokens. MailAccountViewSet.test reuses an existing account's stored secret when a masked password is submitted but accepts caller-controlled IMAP connection settings. Object-level change_mailaccount permission is sufficient to redirect the authenticated test connection to an attacker-controlled IMAP host.

The record

CVE
CVE-2026-71244
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
Paperless-ngx
Product
Paperless-ngx
Classifications
T1187
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Paperless-ngx · Paperless-ngxversion=0

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1187Forced Authentication

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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