Vulnerability · Published Oct 30, 2026 · Assigned by VulnCheck
CVE-2026-119415CakePHP through 5.4.3 MIME Header Injection via FormDataPart Content-Type
Low 3.7
In plain English
A low-severity security flaw in cakephp from cakephp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).
Severity (CVSS 3.1)3.7Low
Exploit odds (30 days)0.4%top 68.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
CakePHP through 5.4.3 contains a header injection vulnerability in FormDataPart that allows attackers to inject MIME part headers via unsanitized Content-Type and Content-ID values. Attackers can supply CR/LF sequences in attachment MIME types or Content-IDs passed to Message::setAttachments() or HTTP client multipart data to add arbitrary headers or content.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | cakephp | no fix listed | UBUNTU-CVE-2026-119415 |
Affected products (as reported)
Weakness: CWE-93 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
References
- https://github.com/cakephp/cakephp/commit/2e54c227eaa4c0e0d5edd74931710fd4f8bc38b5 patch
- https://github.com/cakephp/cakephp/commit/27263ae750a3cd8464a5db076f48a731c8283df2 patch
- https://github.com/cakephp/cakephp/commit/c9a91149f04e2aee7faa30ed57d40f5b91d3f79e patch
- https://github.com/cakephp/cakephp/commit/d66e016d2fd9667dd605b56e25fbb3df5365406a patch
- https://github.com/cakephp/cakephp/pull/19715 patch, issue-tracking
- https://github.com/cakephp/cakephp/blob/6f3dd91371ac0698b64024ddb21d57def9fbba91/src/Http/Client/FormDataPart.php#L200 technical-description
- https://github.com/cakephp/cakephp/blob/6f3dd91371ac0698b64024ddb21d57def9fbba91/src/Mailer/Message.php#L1181 technical-description
- https://abraxaslabs.tech/research/cakephp-attachment-crlf third-party-advisory
- https://github.com/cakephp/cakephp product
- VulnCheck Advisory: CakePHP through 5.4.3 MIME Header Injection via FormDataPart Content-Type third-party-advisory