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Medium, CVSS 6.5

Wallabag user can delete own API client unintentionally

CVE-2023-4455GHSA-gjvc-55fw-v6vq

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (wallabag/wallabag 2.6.3), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
6.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
EPSS
  • CVE-2023-4455: 0.32% estimated exploitation activity in the next 30 days; percentile 25.17 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Description wallabag was discovered to contain a Cross-Site Request Forgery (CSRF) which allows attackers to arbitrarily delete API key via /developer/client/delete/{id} This vulnerability has a CVSSv3.1 score of 6.5. You should immediately patch your instance to version 2.6.3 or higher if you have more than one user and/or having open registration. Resolution This action is now doable only via POST method, which ensures that we can't do it via a 3rd-party website. Credits We would like to thank @tht1997 for reporting this issue through huntr.dev. Reference: https://huntr.dev/bounties/5ab1b206-5fe8-4737-b275-d705e76f193a/

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-gjvc-55fw-v6vq

Agent brief

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# Patch Next advisory brief: CVE-2023-4455

Advisory: Wallabag user can delete own API client unintentionally
IDs: CVE-2023-4455, GHSA-gjvc-55fw-v6vq
Record: https://patchnext.com/advisories/cve-2023-4455 (revision 1, source checked 26 Oct 2026, 14:09 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: wallabag/wallabag 2.6.3. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist wallabag/wallabag: affected >= 2.0.0-alpha.1, <= 2.6.2; fixed in 2.6.3

## Suggested inspection (read-only)
- Packagist wallabag/wallabag: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on wallabag/wallabag.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-gjvc-55fw-v6vq (GitHub-reviewed advisory GHSA-gjvc-55fw-v6vq lists affected ranges: Packagist wallabag/wallabag >=2.0.0-alpha.1 <=2.6.2)

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