CVE-2026-45755
- Source
- https://cve.org/CVERecord?id=CVE-2026-45755
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45755.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-45755
- Aliases
- Downstream
- Published
- 2026-07-14T18:56:20.615Z
- Modified
- 2026-08-05T03:47:34.917317925Z
- Severity
-
- 6.9 (Medium) CVSS_V4 - 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 CVSS Calculator
- Summary
- Symfony: Mailtrap Mailer Webhook Parser Never Verifies the X-Mt-Signature HMAC — Unauthenticated Webhook Event Injection
- Details
-
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 7.4.12 and 8.0.12, MailtrapRequestParser::doParse() received the configured webhook secret but ignored the X-Mt-Signature HMAC header, allowing unauthenticated POST requests to inject forged Mailtrap delivery, bounce, open, click, or spam events. This issue is fixed in versions 7.4.12 and 8.0.12.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45755.json", "unresolved_ranges": [ { "extracted_events": [ { "introduced": "7.2.0" }, { "fixed": "7.4.12" }, { "introduced": "8.0.0-BETA1" }, { "fixed": "8.0.12" }, { "introduced": "7.2.0" }, { "fixed": "7.4.12" }, { "introduced": "8.0.0-BETA1" }, { "fixed": "8.0.12" } ], "source": "AFFECTED_FIELD" } ], "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-306", "CWE-347" ] }- References
-
- 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/2026/45xxx/CVE-2026-45755.json
- https://github.com/symfony/symfony/security/advisories/GHSA-59f3-vp2f-mp9w
- https://nvd.nist.gov/vuln/detail/CVE-2026-45755
- https://github.com/symfony/symfony/commit/4e0467e4e182cf2e704a3d9e1bc1a6be65d52ab8
Affected packages
Git / github.com/symfony/security-http
Git / github.com/symfony/symfony
Affected versions
v2.*
v2.0.0
v2.0.0-RC1
v2.0.0-RC2
v2.0.0-RC3
v2.0.0-RC4
v2.0.0-RC5
v2.0.0-RC6
v2.0.0BETA1
v2.0.0BETA2
v2.0.0BETA3
v2.0.0BETA4
v2.0.0BETA5
v2.0.0PR8
v2.1.0
v2.1.0-BETA1
v2.1.0-BETA2
v2.1.0-BETA3
v2.1.0-BETA4
v2.1.0-RC1
v2.1.0-RC2
v2.2.0-BETA1
v2.2.0-BETA2
v2.3.0-BETA1
v2.3.0-BETA2
v2.4.0-BETA1
v2.4.0-BETA2
v2.5.0-BETA1
v2.5.0-BETA2
v2.6.0-BETA1
v3.*
v3.0.0
v3.0.0-BETA1
v3.2.0-BETA1
v3.2.0-RC1
v3.3.0-BETA1
v4.*
v4.0.0-BETA1
v4.0.0-BETA2
v4.0.0-BETA3
v4.0.0-BETA4
v4.2.0-BETA1
v4.2.0-BETA2
v4.3.0-BETA1
v5.*
v5.0.0-BETA1
v5.0.0-BETA2
v5.0.0-RC1
v5.1.0-BETA1
v5.2.0-BETA1
v5.2.0-BETA2
v5.2.0-BETA3
v5.3.0-BETA1
v5.3.0-BETA2
v5.3.0-BETA3
v5.3.0-BETA4
v6.*
v6.0.0-BETA1
v6.0.0-BETA2
v6.0.0-BETA3
v6.0.0-RC1
v6.1.0-BETA1
v6.1.0-BETA2
v6.1.0-RC1
v6.2.0-BETA1
v6.2.0-BETA2
v6.2.0-BETA3
v6.3.0-BETA1
v6.3.0-BETA2
v6.3.0-BETA3
v6.3.0-RC1
v7.*
v7.0.0-BETA1
v7.0.0-BETA2
v7.0.0-BETA3
v7.0.0-RC1
v7.1.0-BETA1
v7.1.0-RC1
v7.2.0-BETA1
v7.2.0-BETA2
v7.2.0-RC1
v7.3.0-BETA1
v7.3.0-BETA2
v7.3.0-RC1
v7.4.0
v7.4.0-BETA1
v7.4.0-BETA2
v7.4.0-RC1
v7.4.0-RC2
v7.4.0-RC3
v7.4.1
v7.4.10
v7.4.11
v7.4.2
v7.4.3
v7.4.4
v7.4.5
v7.4.6
v7.4.7
v7.4.8
v7.4.9
v8.*
v8.0.0
v8.0.0-BETA1
v8.0.0-BETA2
v8.0.0-RC1
v8.0.0-RC2
v8.0.0-RC3
v8.0.1
v8.0.10
v8.0.11
v8.0.2
v8.0.3
v8.0.4
v8.0.5
v8.0.6
v8.0.7
v8.0.8
v8.0.9
Other
vPR3
vPR4
vPR5
vPR6
vPR8
vPR9