CVE-2022-3994Public exploitNetwork attack vector

Feed access interruption via unauthorized token regeneration

Published Jan 2, 2023 · Updated Apr 10, 2025

Missing authorization in Syde GmbH Authenticator before 1.3.1 allows remote authenticated users to interrupt feed access by resetting its token. The regenerate_token AJAX action accepts a nonce exposed to subscribers and replaces the shared feed token without checking a privileged capability. Subscriber access and token-based feed authentication are required; regeneration invalidates the token shared with other feed consumers.

CVSS severity4.3
Medium
EPSS probability0.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Syde GmbH Authenticator before 1.3.1 allows remote authenticated users to interrupt feed access by resetting its token. The regenerate_token AJAX action accepts a nonce exposed to subscribers and replaces the shared feed token without checking a privileged capability. Subscriber access and token-based feed authentication are required; regeneration invalidates the token shared with other feed consumers.

The record

CVE
CVE-2022-3994
Published
Jan 2, 2023
Updated
Apr 10, 2025
Vendor
Syde GmbH
Product
Authenticator
Classifications
CWE-400, T1565
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 2, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Syde GmbH · Authenticatorversion=0 <1.3.1

Published CVSS scores

8.1WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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 exploitPublished

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1565Data Manipulation

Public exploit references

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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