Low
Thelia before 3.1.2 and 3.2.x before 3.2.1 CSV Formula Injection via Exports
Type: advisorySources: OSV
Thelia before 3.1.2 and 3.2.x before 3.2.1 contains a CSV formula injection vulnerability that allows unauthenticated visitors to inject spreadsheet formulas by supplying crafted registration, checkout or newsletter fields. Attackers can submit names, addresses or phone values starting with =, +, - or @ that CSVSerializer exports verbatim, executing formulas in the administrator's spreadsheet application.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-109396
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 23:55 UTC · Revision 1
Source evidence
Thelia before 3.1.2 and 3.2.x before 3.2.1 CSV Formula Injection via Exports
core-osv · Original sourcePublished 12 Oct 2026, 15:16 UTC
Thelia before 3.1.2 and 3.2.x before 3.2.1 contains a CSV formula injection vulnerability that allows unauthenticated visitors to inject spreadsheet formulas by supplying crafted registration, checkout or newsletter fields. Attackers can submit names, addresses or phone values starting with =, +, - or @ that CSVSerializer exports verbatim, executing formulas in the administrator's spreadsheet application.
osv:CVE-2026-109396
Complete source record
{
"id": "14cc7e47a48a2a03fbb063f3dd98c73160e11f4d1c7955aa509107bdde1a9b56",
"url": "https://osv.dev/vulnerability/CVE-2026-109396",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Thelia before 3.1.2 and 3.2.x before 3.2.1 CSV Formula Injection via Exports",
"summary": "Thelia before 3.1.2 and 3.2.x before 3.2.1 contains a CSV formula injection vulnerability that allows unauthenticated visitors to inject spreadsheet formulas by supplying crafted registration, checkout or newsletter fields. Attackers can submit names, addresses or phone values starting with =, +, - or @ that CSVSerializer exports verbatim, executing formulas in the administrator's spreadsheet application.",
"evidence": "osv:CVE-2026-109396",
"products": [],
"severity": "low",
"structured": {
"id": "CVE-2026-109396",
"aliases": [
"CVE-2026-109396",
"GHSA-gcgv-f8rf-w2wc"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/thelia/thelia",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "d589573261ee9a41db6386375f3beb9f610c5ffd"
},
{
"introduced": "cdff8e3d89985d880a3605ebd6bc585780583d92"
},
{
"fixed": "72a72e442b7a15a54eb2991758e1066b58cfab1e"
},
{
"fixed": "c00a26f0631ed9de3c4466176db6e808a25034aa"
},
{
"fixed": "6e46059225d87565caf4859ec0f764354e82ce95"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "3.1.2"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "3.2.0"
},
{
"fixed": "3.2.1"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"fixed": "c00a26f0631ed9de3c4466176db6e808a25034aa"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "6e46059225d87565caf4859ec0f764354e82ce95"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "d589573261ee9a41db6386375f3beb9f610c5ffd"
}
],
"source": "REFERENCES_TAG",
"original_tag": "3.1.2"
},
{
"range": [
{
"fixed": "72a72e442b7a15a54eb2991758e1066b58cfab1e"
}
],
"source": "REFERENCES_TAG",
"original_tag": "3.2.1"
}
]
}
}
],
"versions": [
"3.1.1",
"3.2.0",
"3.1.0",
"3.0.0",
"3.0.0-beta5",
"3.0.0-beta4",
"3.0.0-beta3",
"3.0.0-beta1",
"2.5.4",
"2.5.3",
"2.5.2",
"2.5.1",
"2.5.0",
"2.5.0-alpha2",
"2.5.0-alpha1",
"2.4.4",
"2.4.3",
"2.4.2",
"2.4.1",
"2.4.0",
"2.4.0-alpha1",
"2.3.0",
"2.3.0-beta2",
"2.3.0-beta1",
"2.3.0-alpha2",
"2.3.0-alpha1",
"2.2.0",
"2.2.0-beta3",
"2.2.0-beta2",
"2.2.0-beta1",
"2.2.0-alpha2",
"2.2.0-alpha1",
"2.1.1",
"2.1.0",
"2.1.0-beta2",
"2.1.0-beta1",
"2.1.0-alpha2",
"2.1.0-alpha1",
"2.0.3-beta2",
"2.0.3-beta",
"2.0.2",
"2.0.1",
"2.0.0",
"2.0.0-RC1",
"2.0.0-beta2",
"2.0.0-beta1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109396.json"
}
}
],
"modified": "2026-10-28T02:30:45.223532816Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109396.json",
"https://github.com/thelia/thelia/releases/tag/3.1.2",
"https://github.com/thelia/thelia/releases/tag/3.2.1",
"https://github.com/thelia/thelia/security/advisories/GHSA-gcgv-f8rf-w2wc",
"https://nvd.nist.gov/vuln/detail/CVE-2026-109396",
"https://www.vulncheck.com/advisories/thelia-before-3.1.2-and-3.2-x-before-3.2.1-csv-formula-injection-via-exports",
"https://github.com/thelia/thelia/commit/6e46059225d87565caf4859ec0f764354e82ce95",
"https://github.com/thelia/thelia/commit/c00a26f0631ed9de3c4466176db6e808a25034aa",
"https://github.com/thelia/thelia",
"https://github.com/thelia/thelia/blob/3.2.0/core/lib/Thelia/Core/Serializer/Serializer/CSVSerializer.php"
],
"provider_metadata": {
"cwe_ids": [
"CWE-1236"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109396.json"
}
},
"related_cves": [
{
"value": "CVE-2026-109396",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 513252,
"published_at": "2026-10-12T15:16:41.909+00:00"
}