{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-34715", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-30T18:41:20.752Z", "datePublished": "2026-04-02T17:57:00.501Z", "dateUpdated": "2026-04-02T17:57:00.501Z"}, "containers": {"cna": {"title": "ewe Has Improper Neutralization of CRLF Sequences in HTTP Headers (HTTP Request/Response Splitting)", "problemTypes": [{"descriptions": [{"cweId": "CWE-113", "lang": "en", "description": "CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/vshakitskiy/ewe/security/advisories/GHSA-x2w3-23jr-hrpf", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/vshakitskiy/ewe/security/advisories/GHSA-x2w3-23jr-hrpf"}, {"name": "https://github.com/vshakitskiy/ewe/commit/ce4ff214d32626a10fda9398dc94a2d720e17446", "tags": ["x_refsource_MISC"], "url": "https://github.com/vshakitskiy/ewe/commit/ce4ff214d32626a10fda9398dc94a2d720e17446"}, {"name": "https://github.com/vshakitskiy/ewe/releases/tag/v3.0.6", "tags": ["x_refsource_MISC"], "url": "https://github.com/vshakitskiy/ewe/releases/tag/v3.0.6"}], "affected": [{"vendor": "vshakitskiy", "product": "ewe", "versions": [{"version": "< 3.0.6", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-02T17:57:00.501Z"}, "descriptions": [{"lang": "en", "value": "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 \u2014 but provides no equivalent protection for outgoing response headers in the encoder. This issue has been patched in version 3.0.6."}], "source": {"advisory": "GHSA-x2w3-23jr-hrpf", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "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 \u2014 but provides no equivalent protection for outgoing response headers in the encoder. This issue has been patched in version 3.0.6."}], "id": "CVE-2026-34715", "lastModified": "2026-04-02T18:16:32.910", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-04-02T18:16:32.910", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/vshakitskiy/ewe/commit/ce4ff214d32626a10fda9398dc94a2d720e17446"}, {"source": "security-advisories@github.com", "url": "https://github.com/vshakitskiy/ewe/releases/tag/v3.0.6"}, {"source": "security-advisories@github.com", "url": "https://github.com/vshakitskiy/ewe/security/advisories/GHSA-x2w3-23jr-hrpf"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-113"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}