CVE-2023-0734Public exploitNetwork attack vector

Unauthorized tag modification via missing ownership check

Published Mar 5, 2023 · Updated Mar 6, 2025

Improper authorization in wallabag before 2.5.4 allows remote attackers to add tags to entries owned by other users. TagController accepts an entry identifier and assigns submitted tags without verifying that the current user owns the selected entry. No account or user interaction is required; successful requests alter another user's saved-entry metadata.

CVSS severity5.3
Medium
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in wallabag before 2.5.4 allows remote attackers to add tags to entries owned by other users. TagController accepts an entry identifier and assigns submitted tags without verifying that the current user owns the selected entry. No account or user interaction is required; successful requests alter another user's saved-entry metadata.

The record

CVE
CVE-2023-0734
Published
Mar 5, 2023
Updated
Mar 6, 2025
Vendor
wallabag
Product
wallabag
Classifications
CWE-285, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 5, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 6, 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 <2.5.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

wallabag · wallabagversion=unspecified <2.5.4

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
7.3huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-285Improper Authorization
T1565.001Stored Data 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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