CVE-2026-34715
MediumCVSS 5.3Exploitation Probability (EPSS)
Low risk25th percentile - higher than 25% of all known CVEs
Summary
In ewe (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.
Risk Assessment
An attacker can manipulate HTTP responses, potentially leading to cache poisoning, session hijacking, or script injection.
Recommendation
Update ewe to version 3.0.6 or later and avoid passing user data into response headers without validation.
Related vulnerabilities
- CVE-2026-97670Critical
The Avada (Fusion) Builder plugin for WordPress up to version 7.16.1 contains an authorization bypass vulnerability. An unauthenticated attacker can invoke arbitrary WordPress action hooks by sending a crafted request to the public form-submit endpoint, potentially leading to permanent deletion of content (posts, pages, comments) or other state changes.
- CVE-2026-103889Critical
The 3D Product configurator plugin for WooCommerce up to version 2.16.2 is vulnerable to Remote Code Execution via the 'xpv_image' parameter. Missing authentication and nonce checks on the wp_loaded handler, combined with lack of sanitization before echoing into a Dompdf-rendered HTML template with PHP execution enabled, allow unauthenticated attackers to execute code on the server.
- CVE-2026-94589Critical
The Extensions For CF7 plugin up to version 3.4.5 is vulnerable to Arbitrary File Upload via the extcf7_submit function. Missing file extension, MIME type, and size validation, combined with absence of PHP-execution guards and a sanitize_file_name() bypass, allow unauthenticated attackers to upload executable files, leading to remote code execution.
- CVE-2026-107645Critical
The Blocksy Companion plugin up to version 2.1.58 is vulnerable to privilege escalation. The implement_user_registration() AJAX handler disables Dokan's vendor-registration nonce check and trusts an attacker-supplied $_POST['role'] value, allowing unauthenticated attackers to obtain a Dokan 'seller' account and be auto-authenticated, even when vendor signup is disabled.
- CVE-2026-104732Critical
The Advanced IP Blocker plugin up to version 8.13.13 is vulnerable to Authentication Bypass. The handle_login_action() function performs no server-side check that step-1 password authentication was completed, and an error branch unconditionally mints a fresh nonce for any unauthenticated caller. This allows attackers to brute-force an unthrottled 6-digit TOTP code and obtain a fully authenticated session for any 2FA-enabled account, including administrators.
- CVE-2026-108474Critical
In JetBrains Exposed before version 1.5.1, SQL injection was possible via unescaped string arguments of several SQL functions.
- CVE-2026-108269Critical
In versions prior to 0.5.0 of Remote Attestation TLS Clients for Rust and Go, RA-TLS challenge verifiers accepted quotes bound to the certificate public key and client nonce but not to the active TLS session. An attacker who obtained an enclave TLS private key could relay a genuine quote onto another connection, causing clients to accept an attacker-terminated connection as the attested enclave. This issue is fixed in 0.5.0.
- CVE-2026-108268Critical
In versions prior to tdx-v0.2.43 and tdx-gpu-v0.6.27, Enclave OS Virtual placed the certificate public-key hash and client nonce in quote ReportData but omitted a value bound to the active TLS session. An attacker who obtained an enclave TLS private key could relay a genuine quote onto another connection, causing a relying party to accept an attacker-terminated connection as the attested enclave. This issue is fixed in tdx-v0.2.43 and tdx-gpu-v0.6.27.
- CVE-2026-108267Critical
In versions prior to privasys-v0.5.1-go1.26.5, Privasys Go (a fork of Go with RA-TLS support) in challenge mode bound quote ReportData to the certificate public key and client nonce but not to the active TLS session. An attacker who obtained an enclave TLS private key could relay a genuine quote onto another connection, causing a relying party to accept a handshake terminated by the attacker as an attested enclave connection. This issue is fixed in privasys-v0.5.1-go1.26.5.
- CVE-2026-108266Critical
In versions prior to privasys-v0.8.1, Privasys rustls (a fork of the rustls TLS library with RA-TLS support) emitted RA-TLS challenge certificates whose quote ReportData was bound to the certificate public key and client nonce but not to the active TLS session. An attacker who obtained an enclave TLS private key could relay a genuine quote onto another connection, causing a relying party to accept an attacker-terminated connection as the attested enclave. This issue is fixed in privasys-v0.8.1.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

