Medium
Symfony: Twilio Notifier Webhook Parser Never Verifies the X-Twilio-Signature HMAC: Unauthenticated Webhook Event Injection
Type: advisorySources: OSV
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 6.4.40, 7.4.12, and 8.0.12, TwilioRequestParser::doParse() received the configured webhook secret but ignored the X-Twilio-Signature HMAC header, allowing unauthenticated POST requests to inject forged Twilio status payloads. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-47212
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 02:48 UTC · Revision 1
Source evidence
Symfony: Twilio Notifier Webhook Parser Never Verifies the X-Twilio-Signature HMAC: Unauthenticated Webhook Event Injection
core-osv · Original sourcePublished 14 Jul 2026, 19:00 UTC
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 6.4.40, 7.4.12, and 8.0.12, TwilioRequestParser::doParse() received the configured webhook secret but ignored the X-Twilio-Signature HMAC header, allowing unauthenticated POST requests to inject forged Twilio status payloads. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.
osv:CVE-2026-47212
Complete source record
{
"id": "89b7150967f5b25bb3f4b010eca560be718d1de1adcde22897747429f0d5f1d3",
"url": "https://osv.dev/vulnerability/CVE-2026-47212",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Symfony: Twilio Notifier Webhook Parser Never Verifies the X-Twilio-Signature HMAC: Unauthenticated Webhook Event Injection",
"summary": "Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 6.4.40, 7.4.12, and 8.0.12, TwilioRequestParser::doParse() received the configured webhook secret but ignored the X-Twilio-Signature HMAC header, allowing unauthenticated POST requests to inject forged Twilio status payloads. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.",
"evidence": "osv:CVE-2026-47212",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-47212",
"aliases": [
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"GHSA-55rj-x2vc-4whq"
],
"metrics": [
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"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
}
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"affected": [
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{
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{
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"range": [
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"source": "CPE_RANGE"
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{
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"source": "REFERENCES_COMMIT"
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"source": "REFERENCES_TAG",
"original_tag": "v6.4.40"
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47212.json"
}
}
],
"modified": "2026-10-28T02:30:32.682127057Z",
"provider": "osv",
"references": [
"https://github.com/symfony/symfony/releases/tag/v6.4.40",
"https://github.com/symfony/symfony/releases/tag/v7.4.12",
"https://github.com/symfony/symfony/releases/tag/v8.0.12",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47212.json",
"https://github.com/symfony/symfony/security/advisories/GHSA-55rj-x2vc-4whq",
"https://nvd.nist.gov/vuln/detail/CVE-2026-47212",
"https://github.com/symfony/symfony/commit/8545fb2af6c07dfb5ef0fc8d9bccf86db2c94356"
],
"provider_metadata": {
"cwe_ids": [
"CWE-306",
"CWE-347"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47212.json"
}
},
"related_cves": [
{
"value": "CVE-2026-47212",
"evidence": "/id"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 499763,
"published_at": "2026-07-14T19:00:30.703+00:00"
}