CVE-2026-34715
- Source
- https://cve.org/CVERecord?id=CVE-2026-34715
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34715.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-34715
- Aliases
- Published
- 2026-04-02T17:57:00Z
- Modified
- 2026-10-28T02:30:41Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
- Summary
- ewe Has Improper Neutralization of CRLF Sequences in HTTP Headers (HTTP Request/Response Splitting)
- Details
-
ewe is a Gleam web server. Prior to version 3.0.6, the encode_headers function in src/ewe/internal/encoder.gleam directly interpolates response header keys and values into raw HTTP bytes without validating or stripping CRLF (\r\n) sequences. An application that passes user-controlled data into response headers (e.g., setting a Location redirect header from a request parameter) allows an attacker to inject arbitrary HTTP response content, leading to response splitting, cache poisoning, and possible cross-site scripting. Notably, ewe does validate CRLF in incoming request headers via validate_field_value() in the HTTP/1.1 parser — but provides no equivalent protection for outgoing response headers in the encoder. This issue has been patched in version 3.0.6.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-113" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34715.json" }- References
-
- https://github.com/vshakitskiy/ewe/releases/tag/v3.0.6
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34715.json
- https://github.com/vshakitskiy/ewe/security/advisories/GHSA-x2w3-23jr-hrpf
- https://nvd.nist.gov/vuln/detail/CVE-2026-34715
- https://github.com/vshakitskiy/ewe/commit/ce4ff214d32626a10fda9398dc94a2d720e17446
Affected packages
Git / github.com/vshakitskiy/ewe
Affected ranges
- Type
- GIT
- Repo
- https://github.com/vshakitskiy/ewe
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "cpe": "cpe:2.3:a:vshakitskiy:ewe:*:*:*:*:*:*:*:*", "range": [ { "introduced": "0" }, { "fixed": "3.0.6" } ], "source": "CPE_RANGE" }, { "range": [ { "fixed": "ce4ff214d32626a10fda9398dc94a2d720e17446" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v3.0.6", "range": [ { "fixed": "9f26359becaf1b6c05f60571df9e22b08d7eddfe" } ], "source": "REFERENCES_TAG" } ] }