CVE-2026-48747
- Source
- https://cve.org/CVERecord?id=CVE-2026-48747
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48747.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-48747
- Aliases
- Downstream
- Published
- 2026-07-14T19:16:24.327Z
- Modified
- 2026-08-12T03:51:44.323291011Z
- Severity
-
- 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Symfony: Mailomat Mailer Webhook Parser Reads the HMAC Algorithm from the Request: Signature Algorithm Downgrade
- Details
-
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 7.4.13 and 8.0.13, MailomatRequestParser::validateSignature() parsed X-MOM-Webhook-Signature as algo=signature and passed the request-selected algorithm to hash_hmac(), allowing a signature algorithm downgrade instead of enforcing Mailomat's documented SHA-256 webhook signature. This issue is fixed in versions 7.4.13 and 8.0.13.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48747.json", "cwe_ids": [ "CWE-347", "CWE-757" ], "cna_assigner": "GitHub_M" }- References
-
- https://github.com/symfony/symfony/releases/tag/v7.4.13
- https://github.com/symfony/symfony/releases/tag/v8.0.13
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48747.json
- https://github.com/symfony/symfony/security/advisories/GHSA-rrj9-5q2j-4gvr
- https://nvd.nist.gov/vuln/detail/CVE-2026-48747
- https://github.com/symfony/symfony/commit/bdfe9fe0d94d33dfaca0bc2fe0b00b54767b0c88
Affected packages
Git / github.com/symfony/security-http
Affected ranges
- Type
- GIT
- Repo
- https://github.com/symfony/security-http
- Events
- Database specific
-
Show details
{ "cpe": "cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*", "source": "CPE_RANGE", "extracted_events": [ { "introduced": "7.2.0" }, { "fixed": "7.4.13" }, { "introduced": "8.0.0" }, { "fixed": "8.0.13" } ] }
- Type
- GIT
- Repo
- https://github.com/symfony/symfony
- Events
- Database specific
-
Show details
{ "source": [ "CPE_RANGE", "REFERENCES" ], "cpe": "cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*", "extracted_events": [ { "introduced": "7.2.0" }, { "fixed": "7.4.13" }, { "introduced": "8.0.0" }, { "fixed": "8.0.13" } ] }