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Medium, CVSS 4.3

Private Weblate projects vulnerable to observable object existence disclosure via globally scoped object lookups

CVE-2026-55227GHSA-2p9g-x3cv-5hh4

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (weblate 2026.7), 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

  • PyPI weblate

    Affected
    < 2026.7
    Fixed in
    2026.7

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
4.3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS
  • CVE-2026-55227: 0.32% estimated exploitation activity in the next 30 days; percentile 25.45 (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.

Impact The several endpoints could leak object existence information to users who had no access to it by HTTP status code 403 instead of 404. Patches https://github.com/WeblateOrg/weblate/pull/19971 References Thanks to Yaohui Wang for reporting this via GitHub.

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

    Published from ghsa record GHSA-2p9g-x3cv-5hh4

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2026-55227

Advisory: Private Weblate projects vulnerable to observable object existence disclosure via globally scoped object lookups
IDs: CVE-2026-55227, GHSA-2p9g-x3cv-5hh4
Record: https://patchnext.com/advisories/cve-2026-55227 (revision 1, source checked 26 Oct 2026, 13:50 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: weblate 2026.7. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI weblate: affected < 2026.7; fixed in 2026.7

## Suggested inspection (read-only)
- `python -m pip show weblate`: prints the installed version. Run with the environment that serves production active.

## 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 weblate.
- 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-2p9g-x3cv-5hh4 (GitHub-reviewed advisory GHSA-2p9g-x3cv-5hh4 lists affected ranges: PyPI weblate >=0 <2026.7)

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