CVE catalog
CVE-2026-66753
tiny-http through 0.12.0 contains an HTTP header injection vulnerability that allows attackers to inject carriage return (0x0D) and line feed (0x0A) bytes into HTTP header values on both request and r
- Severity
- Medium · CVSS 6.3
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.30% · Oct 25, 2026
tiny-http through 0.12.0 contains an HTTP header injection vulnerability that allows attackers to inject carriage return (0x0D) and line feed (0x0A) bytes into HTTP header values on both request and response sides due to insufficient validation in header parsing and serialization. Attackers can exploit this injection primitive to perform response splitting, cache poisoning, session fixation via Set-Cookie injection, security header override, and request smuggling against line-feed-tolerant backends.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | rust-tiny-http | sid | 0.12.0-1 | vulnerable |
| Debian | rust-tiny-http | forky | 0.12.0-1 | vulnerable |
| Debian | rust-tiny-http | trixie | 0.12.0-1 | vulnerable |
| Debian | rust-tiny-http | bookworm | 0.12.0-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | rust-tiny-http | source | sid | (unfixed) | not yet assigned | Not reported | [1142989] |
| Debian | rust-tiny-http | source | forky | (unfixed) | not yet assigned | Not reported | [1142989] |
| Debian | rust-tiny-http | source | trixie | (unfixed) | not yet assigned | Not reported | [1142989] |
| Debian | rust-tiny-http | source | bookworm | (unfixed) | not yet assigned | Not reported | [1142989] |
Notes
[trixie] rust-tiny-http: Minor issue [bookworm] rust-tiny-http: Limited support
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [librust-tiny-http-dev]Affected
Source package: [rust-tiny-http]
Details (2)
0.12.0-1· amd64 · bookwormAffected
nvd · rust-tiny-http · debian · bookworm; nvd · rust-tiny-http · debian · 12
0.12.0-1· arm64 · bookwormAffected
nvd · rust-tiny-http · debian · bookworm; nvd · rust-tiny-http · debian · 12
[Debian 13 (Trixie)]
- [librust-tiny-http-dev]Affected
Source package: [rust-tiny-http]
Details (2)
0.12.0-1+b2· amd64 · trixieAffected
nvd · rust-tiny-http · debian · 13
0.12.0-1+b2· arm64 · trixieAffected
nvd · rust-tiny-http · debian · 13
Observed: