From b1918dd12110c183fc1fba1c51778a32e6cb4049 Mon Sep 17 00:00:00 2001
From: Aadniz <8147434+Aadniz@users.noreply.github.com>
Date: Thu, 6 Nov 2025 07:00:48 +0100
Subject: [PATCH] [fix] yandex engine: capture captcha from header instead of
 url path (#5417)

Yandex engine will return parsing error instead of informing that a CAPTCHA was found. It is confusing for the admin and the users (#5415).


This patch fixes an issue where the CAPTCHA response from Yandex wouldn't be detected, resulting in `ParserError` when trying to parse the response to DOM.

In this fix, I replaced the url condition and instead is checking if the `x-yandex-captcha` header is set, and is equal to `captcha`.

Alternatively, maybe something like `resp.headers.get('Location', '').startswith("https://yandex.com/showcaptcha")` could be done instead. Lastly, setting `params['allow_redirects'] = True` can also work, but this will waste an extra request. Just let me know.

Closes: https://github.com/searxng/searxng/issues/5415
---
 searx/engines/yandex.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/searx/engines/yandex.py b/searx/engines/yandex.py
index 2c6984fdc..77b03067b 100644
--- a/searx/engines/yandex.py
+++ b/searx/engines/yandex.py
@@ -35,7 +35,7 @@ content_xpath = './/div[@class="b-serp-item__content"]//div[@class="b-serp-item_
 
 
 def catch_bad_response(resp):
-    if resp.url.path.startswith('/showcaptcha'):
+    if resp.headers.get('x-yandex-captcha') == 'captcha':
         raise SearxEngineCaptchaException()