CVE-2023-4455Public exploitNetwork attack vector

API client deletion via unprotected GET request

Published Aug 21, 2023 · Updated Oct 3, 2024

Cross-site request forgery in wallabag before 2.6.3 allows remote attackers to delete a user's API client through a crafted request. DeveloperController's client-deletion route accepts a state-changing GET request without validating a CSRF token, allowing a third-party page to invoke the action. A logged-in wallabag user must visit attacker-controlled content, and the deletion remains limited to an API client owned by that user.

CVSS severity6.5
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in wallabag before 2.6.3 allows remote attackers to delete a user's API client through a crafted request. DeveloperController's client-deletion route accepts a state-changing GET request without validating a CSRF token, allowing a third-party page to invoke the action. A logged-in wallabag user must visit attacker-controlled content, and the deletion remains limited to an API client owned by that user.

The record

CVE
CVE-2023-4455
Published
Aug 21, 2023
Updated
Oct 3, 2024
Vendor
wallabag
Product
wallabag
Classifications
CWE-352, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 3, 2024Record 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 <2.6.3
  2. Affected versionversion=unspecified <2.6.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

wallabag · wallabagversion=0 <2.6.3; version=unspecified <2.6.3

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
6.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204.001Malicious Link

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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