CVE-2023-0298Public exploitNetwork attack vector

Account reactivation via unchecked API authorization

Published Jan 14, 2023 · Updated Apr 7, 2025

Incorrect authorization in Firefly III before 5.8.0 allows remote authenticated users to retain API access and unblock accounts. The API authentication middleware failed to reject blocked users, while the user-update controller accepted blocked-state fields from non-owner accounts. A valid user or API credential is required; exploitation restores a blocked account's access and changes its authorization state.

CVSS severity6.5
Medium
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Firefly III before 5.8.0 allows remote authenticated users to retain API access and unblock accounts. The API authentication middleware failed to reject blocked users, while the user-update controller accepted blocked-state fields from non-owner accounts. A valid user or API credential is required; exploitation restores a blocked account's access and changes its authorization state.

The record

CVE
CVE-2023-0298
Published
Jan 14, 2023
Updated
Apr 7, 2025
Vendor
Firefly III
Product
Firefly III
Classifications
CWE-863, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 7, 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=unspecified <5.8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Firefly III · Firefly IIIversion=unspecified <5.8.0

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
6.5huntr.devCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-863Incorrect Authorization
T1098Account 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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