Medium
Observable object existence disclosure in private Weblate projects via globally scoped object lookups
Type: advisorySources: OSV
Weblate is a web-based localization tool. In versions prior to 2026.7, several endpoints look up objects in a globally scoped manner rather than restricting the lookup to projects the user can access, so they return HTTP 403 (Forbidden) instead of 404 (Not Found) when a user requests an object they are not authorized to see. This difference lets unauthorized users infer whether a given object exists in a private Weblate project. The issue has been fixed in version 2026.7.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-55227
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 6 Nov 2026, 01:14 UTC · Revision 1
Source evidence
Observable object existence disclosure in private Weblate projects via globally scoped object lookups
core-osv · Original sourcePublished 26 Aug 2026, 20:10 UTC
Weblate is a web-based localization tool. In versions prior to 2026.7, several endpoints look up objects in a globally scoped manner rather than restricting the lookup to projects the user can access, so they return HTTP 403 (Forbidden) instead of 404 (Not Found) when a user requests an object they are not authorized to see. This difference lets unauthorized users infer whether a given object exists in a private Weblate project. The issue has been fixed in version 2026.7.
osv:CVE-2026-55227
Complete source record
{
"id": "a36b7780f67376ce92efc0c09660fdaf38feb07a93d0d512925a55597c0583a6",
"url": "https://osv.dev/vulnerability/CVE-2026-55227",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Observable object existence disclosure in private Weblate projects via globally scoped object lookups",
"summary": "Weblate is a web-based localization tool. In versions prior to 2026.7, several endpoints look up objects in a globally scoped manner rather than restricting the lookup to projects the user can access, so they return HTTP 403 (Forbidden) instead of 404 (Not Found) when a user requests an object they are not authorized to see. This difference lets unauthorized users infer whether a given object exists in a private Weblate project. The issue has been fixed in version 2026.7.",
"evidence": "osv:CVE-2026-55227",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-55227",
"aliases": [
"CVE-2026-55227",
"GHSA-2p9g-x3cv-5hh4",
"PYSEC-2026-3941"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/weblateorg/weblate",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "95ce13d4a441559a94387f5f5a198b3b4b4a0027"
},
{
"fixed": "836bc082803d49d02f2831ec8339268eb66bcdae"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "2026.7"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "836bc082803d49d02f2831ec8339268eb66bcdae"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"weblate-2026.6",
"weblate-2026.5",
"weblate-5.17.1",
"weblate-5.17",
"weblate-5.16.1",
"weblate-5.16",
"weblate-5.15.2",
"weblate-5.15.1",
"weblate-5.15",
"weblate-5.14.1",
"weblate-5.14",
"weblate-5.13.2",
"weblate-5.13.1",
"weblate-5.13",
"weblate-5.12.2",
"weblate-5.12.1",
"weblate-5.12",
"weblate-5.11.1",
"weblate-5.11",
"weblate-5.10.3",
"weblate-5.10.2",
"weblate-5.10.1",
"weblate-5.10",
"weblate-5.9.2",
"weblate-5.9.1",
"weblate-5.9",
"weblate-5.8.2",
"weblate-5.8.1",
"weblate-5.8",
"weblate-5.7.2",
"weblate-5.7.1",
"weblate-5.7",
"weblate-5.6.1",
"weblate-5.6",
"weblate-5.5.5",
"weblate-5.5.4",
"weblate-5.5.3",
"weblate-5.5.2",
"weblate-5.5.1",
"weblate-5.5",
"weblate-5.4",
"weblate-5.3",
"weblate-5.2.1",
"weblate-5.2",
"weblate-5.1.1",
"weblate-5.1",
"weblate-5.0.2",
"weblate-5.0.1",
"weblate-4.18.1",
"weblate-4.18",
"weblate-4.17",
"weblate-4.16.2",
"weblate-4.16.1",
"weblate-4.16",
"weblate-4.15.1",
"weblate-4.15",
"weblate-4.14.2",
"weblate-4.14.1",
"weblate-4.14",
"weblate-4.13.1",
"weblate-4.13",
"weblate-4.12.1",
"weblate-4.12",
"weblate-4.11.2",
"weblate-4.11.1",
"weblate-4.11",
"weblate-4.10.1",
"weblate-4.10",
"weblate-4.9.1",
"weblate-4.9",
"weblate-4.8.1",
"weblate-4.8",
"weblate-4.7.2",
"weblate-4.7.1",
"weblate-4.7",
"weblate-4.6",
"weblate-4.5.2",
"weblate-4.5.1",
"weblate-4.5",
"weblate-4.4.1",
"weblate-4.4",
"weblate-4.3.2",
"weblate-4.3.1",
"weblate-4.3",
"weblate-4.2.1",
"weblate-4.2",
"weblate-4.1.1",
"weblate-4.1",
"weblate-4.0.2",
"weblate-4.0.1",
"weblate-4.0",
"weblate-3.11.1",
"weblate-3.11",
"weblate-3.10.2",
"weblate-3.10.1",
"weblate-3.10",
"weblate-3.9.1",
"weblate-3.9",
"weblate-3.8",
"weblate-3.7.1",
"weblate-3.7",
"weblate-3.6.1",
"weblate-3.6",
"weblate-3.5.1",
"weblate-3.5",
"weblate-3.4",
"weblate-3.3",
"weblate-3.2.1",
"weblate-3.2",
"weblate-3.1.1",
"weblate-3.1",
"weblate-3.0.1",
"weblate-3.0",
"weblate-2.20",
"weblate-2.19.1",
"weblate-2.19",
"weblate-2.18",
"weblate-2.17",
"weblate-2.16",
"weblate-2.15",
"weblate-2.14.1",
"weblate-2.14",
"weblate-2.13.1",
"weblate-2.13",
"weblate-2.12",
"weblate-2.11",
"weblate-2.10",
"weblate-2.9",
"weblate-2.8",
"weblate-2.7",
"weblate-2.5",
"weblate-2.4",
"weblate-2.3",
"weblate-2.2",
"weblate-2.1",
"weblate-1.9",
"weblate-1.8",
"weblate-1.7",
"weblate-1.6",
"weblate-1.5",
"weblate-1.4",
"weblate-1.3",
"weblate-1.2",
"weblate-1.1",
"weblate-1.0",
"weblate-0.9",
"weblate-0.8",
"weblate-0.6",
"weblate-0.5",
"weblate-0.3",
"weblate-0.2",
"weblate-0.1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55227.json"
}
}
],
"modified": "2026-10-28T02:30:45.735647682Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55227.json",
"https://github.com/WeblateOrg/weblate/security/advisories/GHSA-2p9g-x3cv-5hh4",
"https://nvd.nist.gov/vuln/detail/CVE-2026-55227",
"https://github.com/WeblateOrg/weblate/commit/836bc082803d49d02f2831ec8339268eb66bcdae"
],
"provider_metadata": {
"cwe_ids": [
"CWE-203"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55227.json"
}
},
"related_cves": [
{
"value": "CVE-2026-55227",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 513759,
"published_at": "2026-08-26T20:10:39.333+00:00"
}