CVE-2026-66730 facil.io 0.6.0 - 0.7.6 Infinite Loop DoS via Multipart MIME Body Parser

facil.io 0.6.0 through 0.7.6 contains a denial-of-service vulnerability in the multipart body parser that allows an unauthenticated remote attacker to permanently freeze worker processes at 100% CPU by sending a multipart/form-data request with a partial closing boundary. The missing progress gua...

CVE-2026-66730

CVE-2026-66730 concerns facil.io versions 0.6.0–0.7.6, where the multipart body parser is vulnerable to a denial-of-service. The root cause is a missing progress guard in the parser loop: http_mime_parse can return 0 bytes consumed without setting done or error flags, causing the caller to repeat...

CVE-2026-66730

facil.io 0.6.0 through 0.7.6 contains a denial-of-service vulnerability in the multipart body parser that allows an unauthenticated remote attacker to permanently freeze worker processes at 100% CPU by sending a multipart/form-data request with a partial closing boundary. The missing progress gua...

CVE-2026-66730 facil.io 0.6.0 - 0.7.6 Infinite Loop DoS via Multipart MIME Body Parser

facil.io 0.6.0 through 0.7.6 contains a denial-of-service vulnerability in the multipart body parser that allows an unauthenticated remote attacker to permanently freeze worker processes at 100% CPU by sending a multipart/form-data request with a partial closing boundary. The missing progress gua...

CVE-2026-66729 facil.io 0.6.0 - 0.7.6 Integer Underflow DoS via Multipart MIME Body Parser

facil.io 0.6.0 through 0.7.6 contains an integer underflow vulnerability in the multipart MIME body parser that allows unauthenticated remote attackers to crash the server process by sending a crafted Content-Disposition header with an empty field name. Attackers can trigger a uint32t wraparound ...

CVE-2026-66729 facil.io 0.6.0 - 0.7.6 Integer Underflow DoS via Multipart MIME Body Parser

facil.io 0.6.0 through 0.7.6 contains an integer underflow vulnerability in the multipart MIME body parser that allows unauthenticated remote attackers to crash the server process by sending a crafted Content-Disposition header with an empty field name. Attackers can trigger a uint32t wraparound ...

PT-2026-65067

Name of the Vulnerable Software and Affected Versions facil.io versions 0.7.5 through 0.7.6 Description A denial-of-service issue exists in the HTTP/1.1 chunked transfer encoding parser. An unauthenticated remote attacker can crash the server by sending a single POST request with a...

CVE-2026-16653

A security flaw has been discovered in boazsegev facil.io up to 0.7.58. This affects the function httpsendfile2 of the file lib/facil/http/http.c of the component Public Folder Handler. Performing a manipulation results in path traversal. Remote exploitation of the attack is possible. The exploit...

CVE-2026-16653

A security flaw has been discovered in boazsegev facil.io up to 0.7.58. This affects the function httpsendfile2 of the file lib/facil/http/http.c of the component Public Folder Handler. Performing a manipulation results in path traversal. Remote exploitation of the attack is possible. The exploit...

CVE-2026-16653 boazsegev facil.io Public Folder http.c http_sendfile2 path traversal

A security flaw has been discovered in boazsegev facil.io up to 0.7.58. This affects the function httpsendfile2 of the file lib/facil/http/http.c of the component Public Folder Handler. Performing a manipulation results in path traversal. Remote exploitation of the attack is possible. The exploit...

CVE-2026-16653 boazsegev facil.io Public Folder http.c http_sendfile2 path traversal

A security flaw has been discovered in boazsegev facil.io up to 0.7.58. This affects the function httpsendfile2 of the file lib/facil/http/http.c of the component Public Folder Handler. Performing a manipulation results in path traversal. Remote exploitation of the attack is possible. The exploit...

CVE-2026-16632

A flaw has been found in boazsegev facil.io up to 0.7.4. Affected is the function websocketonprotocolerror in the library lib/facil/http/parsers/websocketparser.h of the component WebSocket Frame Parser. This manipulation of the argument onmessage causes improper input validation. The attack can ...

CVE-2026-41146 facil.io and downstream iodine ruby gem vulnerable to uncontrolled resource consumption and loop with unreachable exit condition

facil.io is a C micro-framework for web applications. Prior to commit 5128747363055201d3ecf0e29bf0a961703c9fa0, fiojsonparse can enter an infinite loop when it encounters a nested JSON value starting with i or I. The process spins in user space and pegs one CPU core at 100% instead of returning a...

CVE-2026-41146 facil.io and downstream iodine ruby gem vulnerable to uncontrolled resource consumption and loop with unreachable exit condition

facil.io is a C micro-framework for web applications. Prior to commit 5128747363055201d3ecf0e29bf0a961703c9fa0, fiojsonparse can enter an infinite loop when it encounters a nested JSON value starting with i or I. The process spins in user space and pegs one CPU core at 100% instead of returning a...

CVE-2026-41146

facil.io (C micro-framework) contains a vulnerability in fio_json_parse that can enter an infinite loop when parsing a nested JSON value starting with i or I, causing a CPU core to be pegged at ~100% and not returning a parse error. The issue also affects downstream iodine Ruby gem that vendors t...

Uncontrolled resource consumption and loop with unreachable exit condition in facil.io and downstream iodine ruby gem

Summary fiojsonparse can enter an infinite loop when it encounters a nested JSON value starting with i or I. The process spins in user space and pegs one CPU core at 100% instead of returning a parse error. Because iodine vendors the same parser code, the issue also affects iodine when it parses...

GHSA-2X79-GWQ3-VXXM Uncontrolled resource consumption and loop with unreachable exit condition in facil.io and downstream iodine ruby gem

Summary fiojsonparse can enter an infinite loop when it encounters a nested JSON value starting with i or I. The process spins in user space and pegs one CPU core at 100% instead of returning a parse error. Because iodine vendors the same parser code, the issue also affects iodine when it parses...

Uncontrolled resource consumption and loop with unreachable exit condition in facil.io and downstream iodine ruby gem

Summary fiojsonparse can enter an infinite loop when it encounters a nested JSON value starting with i or I. The process spins in user space and pegs one CPU core at 100 instead of returning a parse error. Because iodine gem vendors the same parser code, the issue also affects iodine gem when it...