{"id":"CVE-2026-24489","aliases":["EUVD-2026-4832","GHSA-gcgx-chcp-hxp9","PYSEC-2026-1400"],"status":"published","title":"Gakido vulnerable to HTTP Header Injection (CRLF Injection)","description":"Gakido is a Python HTTP client focused on browser impersonation and anti-bot evasion. A vulnerability was discovered in Gakido prior to version 0.1.1 that allowed HTTP header injection through CRLF (Carriage Return Line Feed) sequences in user-supplied header values and names. When making HTTP requests with user-controlled header values containing `\\r\\n` (CRLF), `\\n` (LF), or `\\x00` (null byte) characters, an attacker could inject arbitrary HTTP headers into the request. The fix in version 0.1.1 adds a `_sanitize_header()` function that strips `\\r`, `\\n`, and `\\x00` characters from both header names and values before they are included in HTTP requests.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00395,"percentile":0.34008,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-113","CWE-93"],"published":"2026-01-26T23:29:57Z","modified":"2026-10-28T02:30:31Z","fixes":[{"ecosystem":"PyPI","package":"gakido","fixed_in":["0.1.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"gakido","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.1.1"}]}]},{"source":"osv","ecosystem":"PyPI","package":"gakido","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.1.1"}]}],"versions":["0.1.0"]},{"source":"osv","ecosystem":"PyPI","package":"gakido","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.1.1"}]}],"versions":["0.1.0"]}],"products":[{"vendor":"happyhackingspace","product":"gakido"}],"references":[{"url":"https://github.com/HappyHackingSpace/gakido/security/advisories/GHSA-gcgx-chcp-hxp9","tags":["x_refsource_CONFIRM","advisory","web"]},{"url":"https://github.com/HappyHackingSpace/gakido/commit/369c67e67c63da510c8a9ab021e54a92ccf1f788","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/HappyHackingSpace/gakido/releases/tag/v0.1.1-1bc6019","tags":["x_refsource_MISC","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-24489","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-gcgx-chcp-hxp9","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24489.json","tags":["advisory"]},{"url":"https://github.com/HappyHackingSpace/gakido","tags":["package"]},{"url":"https://pypi.org/project/gakido","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-24489","title":"Gakido vulnerable to HTTP Header Injection (CRLF Injection)","description":"Gakido is a Python HTTP client focused on browser impersonation and anti-bot evasion. A vulnerability was discovered in Gakido prior to version 0.1.1 that allowed HTTP header injection through CRLF (Carriage Return Line Feed) sequences in user-supplied header values and names. When making HTTP requests with user-controlled header values containing `\\r\\n` (CRLF), `\\n` (LF), or `\\x00` (null byte) characters, an attacker could inject arbitrary HTTP headers into the request. The fix in version 0.1.1 adds a `_sanitize_header()` function that strips `\\r`, `\\n`, and `\\x00` characters from both header names and values before they are included in HTTP requests.","status":"published","published":"2026-01-27T00:36:34.23Z","modified":"2026-01-27T14:46:42.53Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-93","CWE-113"],"updated_at":"2026-11-02T14:19:50.92611Z"}],"euvd":[{"id":"EUVD-2026-4832","description":"Gakido is a Python HTTP client focused on browser impersonation and anti-bot evasion. A vulnerability was discovered in Gakido prior to version 0.1.1 that allowed HTTP header injection through CRLF (Carriage Return Line Feed) sequences in user-supplied header values and names. When making HTTP requests with user-controlled header values containing `\\r\\n` (CRLF), `\\n` (LF), or `\\x00` (null byte) characters, an attacker could inject arbitrary HTTP headers into the request. The fix in version 0.1.1 adds a `_sanitize_header()` function that strips `\\r`, `\\n`, and `\\x00` characters from both header names and values before they are included in HTTP requests.","status":"published","published":"2026-01-27T00:36:34Z","modified":"2026-01-27T14:46:42Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T19:48:47.293439Z"}],"ghsa":[{"id":"GHSA-gcgx-chcp-hxp9","title":"Gakido vulnerable to HTTP Header Injection (CRLF Injection) ","description":"A vulnerability was discovered in Gakido that allowed HTTP Header Injection through CRLF (Carriage Return Line Feed) sequences in user-supplied header values and names.\n\nWhen making HTTP requests with user-controlled header values containing `\\r\\n` (CRLF), `\\n` (LF), or `\\x00` (null byte) characters, an attacker could inject arbitrary HTTP headers into the request.\n\n## Impact\n\nAn attacker who can control header values passed to Gakido's `Client.get()`, `Client.post()`, or other request methods could:\n\n1. **Inject arbitrary HTTP headers** - Add malicious headers to requests\n2. **HTTP Response Splitting** - Potentially manipulate responses in certain proxy configurations\n3. **Cache Poisoning** - Inject headers that could poison intermediate caches\n4. **Session Fixation** - Inject session-related headers\n5. **Bypass Security Controls** - Inject headers that bypass server-side security checks\n\n## Proof of Concept\n\n```python\nfrom gakido import Client\n\n# Before fix: X-Injected header would be sent as a separate header\nc = Client(impersonate=\"chrome_120\")\nr = c.get(\"https://httpbin.org/headers\", headers={\n    \"User-Agent\": \"test\\r\\nX-Injected: pwned\"\n})\n\n# The server would receive:\n# User-Agent: test\n# X-Injected: pwned\n```\n\n## Affected Code\n\nThe vulnerability existed in the header processing logic where user-supplied headers were not sanitized before being sent in HTTP requests.\n\n**File:** `gakido/headers.py`  \n**Function:** `canonicalize_headers()`\n\n## Fix\n\nThe fix adds a `_sanitize_header()` function that strips `\\r`, `\\n`, and `\\x00` characters from both header names and values before they are included in HTTP requests.\n\n```python\ndef _sanitize_header(name: str, value: str) -\u003e tuple[str, str]:\n    \"\"\"\n    Sanitize header name and value to prevent HTTP header injection (CRLF injection).\n    Strips CR, LF, and null bytes from both name and value.\n    \"\"\"\n    clean_name = name.replace(\"\\r\", \"\").replace(\"\\n\", \"\").replace(\"\\x00\", \"\")\n    clean_value = value.replace(\"\\r\", \"\").replace(\"\\n\", \"\").replace(\"\\x00\", \"\")\n    return clean_name, clean_value\n```","status":"published","published":"2026-01-26T23:29:57Z","modified":"2026-01-29T03:25:05Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-93","CWE-113"],"updated_at":"2026-11-02T14:39:20.563096Z"}],"nvd":[{"id":"CVE-2026-24489","description":"Gakido is a Python HTTP client focused on browser impersonation and anti-bot evasion. A vulnerability was discovered in Gakido prior to version 0.1.1 that allowed HTTP header injection through CRLF (Carriage Return Line Feed) sequences in user-supplied header values and names. When making HTTP requests with user-controlled header values containing `\\r\\n` (CRLF), `\\n` (LF), or `\\x00` (null byte) characters, an attacker could inject arbitrary HTTP headers into the request. The fix in version 0.1.1 adds a `_sanitize_header()` function that strips `\\r`, `\\n`, and `\\x00` characters from both header names and values before they are included in HTTP requests.","status":"published","published":"2026-01-27T01:16:02.453Z","modified":"2026-06-17T10:23:08.793Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-93","CWE-113"],"updated_at":"2026-11-02T14:12:04.769088Z"}],"osv":[{"id":"CVE-2026-24489","title":"Gakido vulnerable to HTTP Header Injection (CRLF Injection)","description":"Gakido is a Python HTTP client focused on browser impersonation and anti-bot evasion. A vulnerability was discovered in Gakido prior to version 0.1.1 that allowed HTTP header injection through CRLF (Carriage Return Line Feed) sequences in user-supplied header values and names. When making HTTP requests with user-controlled header values containing `\\r\\n` (CRLF), `\\n` (LF), or `\\x00` (null byte) characters, an attacker could inject arbitrary HTTP headers into the request. The fix in version 0.1.1 adds a `_sanitize_header()` function that strips `\\r`, `\\n`, and `\\x00` characters from both header names and values before they are included in HTTP requests.","status":"published","published":"2026-01-27T00:36:34.23Z","modified":"2026-10-28T02:30:31.686777017Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-113","CWE-93"],"updated_at":"2026-11-02T15:44:59.079784Z"},{"id":"GHSA-gcgx-chcp-hxp9","title":"Gakido vulnerable to HTTP Header Injection (CRLF Injection) ","description":"A vulnerability was discovered in Gakido that allowed HTTP Header Injection through CRLF (Carriage Return Line Feed) sequences in user-supplied header values and names.\n\nWhen making HTTP requests with user-controlled header values containing `\\r\\n` (CRLF), `\\n` (LF), or `\\x00` (null byte) characters, an attacker could inject arbitrary HTTP headers into the request.\n\n## Impact\n\nAn attacker who can control header values passed to Gakido's `Client.get()`, `Client.post()`, or other request methods could:\n\n1. **Inject arbitrary HTTP headers** - Add malicious headers to requests\n2. **HTTP Response Splitting** - Potentially manipulate responses in certain proxy configurations\n3. **Cache Poisoning** - Inject headers that could poison intermediate caches\n4. **Session Fixation** - Inject session-related headers\n5. **Bypass Security Controls** - Inject headers that bypass server-side security checks\n\n## Proof of Concept\n\n```python\nfrom gakido import Client\n\n# Before fix: X-Injected header would be sent as a separate header\nc = Client(impersonate=\"chrome_120\")\nr = c.get(\"https://httpbin.org/headers\", headers={\n    \"User-Agent\": \"test\\r\\nX-Injected: pwned\"\n})\n\n# The server would receive:\n# User-Agent: test\n# X-Injected: pwned\n```\n\n## Affected Code\n\nThe vulnerability existed in the header processing logic where user-supplied headers were not sanitized before being sent in HTTP requests.\n\n**File:** `gakido/headers.py`  \n**Function:** `canonicalize_headers()`\n\n## Fix\n\nThe fix adds a `_sanitize_header()` function that strips `\\r`, `\\n`, and `\\x00` characters from both header names and values before they are included in HTTP requests.\n\n```python\ndef _sanitize_header(name: str, value: str) -\u003e tuple[str, str]:\n    \"\"\"\n    Sanitize header name and value to prevent HTTP header injection (CRLF injection).\n    Strips CR, LF, and null bytes from both name and value.\n    \"\"\"\n    clean_name = name.replace(\"\\r\", \"\").replace(\"\\n\", \"\").replace(\"\\x00\", \"\")\n    clean_value = value.replace(\"\\r\", \"\").replace(\"\\n\", \"\").replace(\"\\x00\", \"\")\n    return clean_name, clean_value\n```","status":"published","published":"2026-01-26T23:29:57Z","modified":"2026-07-07T17:57:21.373649048Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-113","CWE-93"],"updated_at":"2026-11-02T15:46:47.822182Z"},{"id":"PYSEC-2026-1400","title":"Gakido vulnerable to HTTP Header Injection (CRLF Injection) ","description":"A vulnerability was discovered in Gakido that allowed HTTP Header Injection through CRLF (Carriage Return Line Feed) sequences in user-supplied header values and names.\n\nWhen making HTTP requests with user-controlled header values containing `\\r\\n` (CRLF), `\\n` (LF), or `\\x00` (null byte) characters, an attacker could inject arbitrary HTTP headers into the request.\n\n## Impact\n\nAn attacker who can control header values passed to Gakido's `Client.get()`, `Client.post()`, or other request methods could:\n\n1. **Inject arbitrary HTTP headers** - Add malicious headers to requests\n2. **HTTP Response Splitting** - Potentially manipulate responses in certain proxy configurations\n3. **Cache Poisoning** - Inject headers that could poison intermediate caches\n4. **Session Fixation** - Inject session-related headers\n5. **Bypass Security Controls** - Inject headers that bypass server-side security checks\n\n## Proof of Concept\n\n```python\nfrom gakido import Client\n\n# Before fix: X-Injected header would be sent as a separate header\nc = Client(impersonate=\"chrome_120\")\nr = c.get(\"https://httpbin.org/headers\", headers={\n    \"User-Agent\": \"test\\r\\nX-Injected: pwned\"\n})\n\n# The server would receive:\n# User-Agent: test\n# X-Injected: pwned\n```\n\n## Affected Code\n\nThe vulnerability existed in the header processing logic where user-supplied headers were not sanitized before being sent in HTTP requests.\n\n**File:** `gakido/headers.py`  \n**Function:** `canonicalize_headers()`\n\n## Fix\n\nThe fix adds a `_sanitize_header()` function that strips `\\r`, `\\n`, and `\\x00` characters from both header names and values before they are included in HTTP requests.\n\n```python\ndef _sanitize_header(name: str, value: str) -\u003e tuple[str, str]:\n    \"\"\"\n    Sanitize header name and value to prevent HTTP header injection (CRLF injection).\n    Strips CR, LF, and null bytes from both name and value.\n    \"\"\"\n    clean_name = name.replace(\"\\r\", \"\").replace(\"\\n\", \"\").replace(\"\\x00\", \"\")\n    clean_value = value.replace(\"\\r\", \"\").replace(\"\\n\", \"\").replace(\"\\x00\", \"\")\n    return clean_name, clean_value\n```","status":"published","published":"2026-07-07T16:03:20.559426Z","modified":"2026-07-07T17:46:43.200924307Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:54.622769Z"}]}}