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.
Fix
Patch, vendor advisory and mitigation references on NVD 5
- 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
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.3 · cakephpNVD modified 2026-10-30 11:30
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 10
- 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
- https://www.vulncheck.com/advisories/cakephp-through-5.4.3-mime-header-injection-via-formdatapart-content-type third-party-advisory