Vulnerabilities in pkg:pypi/weblate

PACKAGE
Advisory Identifier: GHSA-2p9g-x3cv-5hh4
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Advisory Summary

CVE-2026-55227 is a MODERATE (CVSS 4.3) private weblate projects vulnerable to vulnerability (CWE-203: Observable Discrepancy) affecting Weblate libraries in the PyPI ecosystem. The issue involves private weblate projects vulnerable to observable object existence disclosure via globally scoped object lookups. Remediation is available by upgrading affected packages to version 2026.7.

19 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:pypi/weblate

19 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:pypi/weblate. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-2p9g-x3cv-5hh4 CVE-2026-55227 MODERATE Private Weblate projects vulnerable to observable object existence disclosure via globally scoped object lookups
GHSA-vmfc-9982-2m45 CVE-2026-50127 MODERATE Weblate SSRF: outbound URL guard misses some private ranges
GHSA-6wxc-8mgq-w26m CVE-2026-45106 MODERATE Weblate: Stored HTML injection in editor search preview
GHSA-gr35-vpx2-qxhc CVE-2025-64326 LOW Weblate leaks the IP of project member inviting user to be reviewer in Audit log
GHSA-gcg5-86jr-f7jg CVE-2026-44263 MODERATE Weblate Vulnerable to Private Translation Enumeration via Screenshot API
GHSA-5cmv-3rc4-7279 CVE-2026-44264 MODERATE Weblate vulnerable to XSS via crafted Markdown
GHSA-cwcx-382v-8m9g CVE-2026-41654 MODERATE Weblate Vulnerable to Authenticated SSRF via Project Backup Import bypassing validate_repo_url
GHSA-6j8j-4qp3-36p2 CVE-2026-41519 MODERATE Weblate Doesn't Invalidate API Token on Password Change
GHSA-ffgh-3jrf-8wvh CVE-2026-40256 MODERATE Weblate: Prefix-Based Repository Boundary Check Bypass via Symlink/Junction Path Prefix Collision
GHSA-xrwr-fcw6-fmq8 CVE-2026-34244 MODERATE Weblate: SSRF via Project-Level Machinery Configuration
GHSA-hv99-mxm5-q397 CVE-2026-34242 HIGH Weblate: Arbitrary File Read via Symlink
GHSA-5fhx-9jwj-867m CVE-2026-33440 MODERATE Weblate: Authenticated SSRF via redirect bypass of ALLOWED_ASSET_DOMAINS in screenshot URL uploads
GHSA-vj45-x3pj-f4w4 CVE-2026-33212 LOW Weblate: Improper access control for pending tasks in API
GHSA-wppc-7cq7-cgfv CVE-2026-27457 MODERATE Weblate: Missing access control for the AddonViewSet API exposes all addon configurations
GHSA-3g2f-4rjg-9385 CVE-2026-21889 LOW Weblate leaks information via screenshots
GHSA-4qqf-9m5c-w2c5 CVE-2025-49134 LOW Weblate exposes personal IP address via e-mail
GHSA-57jg-m997-cx3q CVE-2025-47951 MODERATE Weblate lacks rate limiting when verifying second factor
GHSA-m67m-3p5g-cw9j CVE-2025-32021 LOW VCS credentials included in URL parameters are potentially logged and saved into browser history as plaintext
GHSA-j24g-gm76-j829 CVE-2017-5537 MODERATE Weblate user account enumeration via reset password form

CVE-2026-55227 at a Glance

CVE Identifier CVE-2026-55227
GHSA Identifier GHSA-2p9g-x3cv-5hh4
Severity MODERATE
CVSS v3.1 Base Score 4.3
CWE Classification CWE-203: Observable Discrepancy
Affected Product Weblate
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 4.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2026-55227

To remediate this vulnerability, upgrade all affected Weblate dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

weblate fixed: 2026.7 
pip install weblate>=2026.7
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show weblate

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-55227, inspect your installed packages using pip:

pip show weblate

Analyze the terminal output to locate any version of Weblate in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2026.7), your application is affected.

Note: The pip show weblate command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-203: Observable Discrepancy, where the product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor. In Weblate, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### 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.

CVE-2026-55227 Affected Weblate Versions

1 component(s)
Fixed Versions:
2026.7
Product / Package Ecosystem Affected Versions Fixed Version
weblate
pypi/weblate
PyPI
< 2026.7
2026.7

References

GitHub Advisory / Wiki ADVISORY
https://github.com/WeblateOrg/weblate/security/advisories/GHSA-2p9g-x3cv-5hh4
NVD — CVE-2026-55227 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-55227
Weblate Source Repository REPOSITORY
https://github.com/WeblateOrg/weblate/pull/19971
Security Fix Commit FIX COMMIT
https://github.com/WeblateOrg/weblate/commit/836bc082803d49d02f2831ec8339268eb66bcdae
Weblate Source Repository REPOSITORY
https://github.com/WeblateOrg/weblate
Weblate Release RELEASE
https://github.com/WeblateOrg/weblate/releases/tag/weblate-2026.7

Frequently Asked Questions

What is CVE-2026-55227?
CVE-2026-55227 is a security vulnerability in Weblate involving Private Weblate projects vulnerable to observable object existence disclosure via globally scoped object lookups under CWE-203: Observable Discrepancy.
Which Weblate versions are affected?
Affected versions include releases prior to 2026.7 across affected packages: weblate.
What version fixes CVE-2026-55227?
Upgrading to 2026.7 (or the latest patched release for your respective branch) resolves the vulnerability.
Is weblate affected?
Yes, weblate is affected in releases prior to 2026.7. Upgrade your dependency to 2026.7 or later.
What is the CVSS score of CVE-2026-55227?
CVE-2026-55227 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2026-55227?
CVE-2026-55227 is classified under CWE-203: Observable Discrepancy (The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.).
How can I check PyPI dependencies for CVE-2026-55227?
Run the dependency tree command: 'pip show weblate'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-2p9g-x3cv-5hh4",
  "modified" : "2026-08-28T18:46:54Z",
  "published" : "2026-08-28T18:46:54Z",
  "aliases" : [ "CVE-2026-55227" ],
  "summary" : "Private Weblate projects vulnerable to observable object existence disclosure via globally scoped object lookups",
  "details" : "### Impact\nThe several endpoints could leak object existence information to users who had no access to it by HTTP status code 403 instead of 404.\n\n### Patches\n* https://github.com/WeblateOrg/weblate/pull/19971\n\n### References\nThanks to Yaohui Wang for reporting this via GitHub.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "weblate"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2026.7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/WeblateOrg/weblate/security/advisories/GHSA-2p9g-x3cv-5hh4"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-55227"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/WeblateOrg/weblate/pull/19971"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/WeblateOrg/weblate/commit/836bc082803d49d02f2831ec8339268eb66bcdae"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/WeblateOrg/weblate"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/WeblateOrg/weblate/releases/tag/weblate-2026.7"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-203" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-28T18:46:54Z",
    "nvd_published_at" : "2026-08-26T21:16:38Z"
  }
}