CVE-2026-48761 Symfony: HtmlSanitizer UrlAttributeSanitizer Misses URL Attributes on <object>, <applet>, <iframe>, <img> and the URL Inside <meta http-equiv="refresh"> content

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.1.0 until 6.4.41, 7.4.13, and 8.0.13, UrlAttributeSanitizer::getSupportedAttributes omitted URL-bearing attributes on , , , and , and URLs inside content bypassed URL sanitization, allowing...

CVE-2026-48761

CVE-2026-48761 affects the Symfony HtmlSanitizer: UrlAttributeSanitizer misses URL-bearing attributes on , , , and also URLs inside content. Affects Symfony versions 6.1.0 through 6.4.41, 7.4.13, and 8.0.13. Root cause: UrlAttributeSanitizer omits certain URL attributes and multi-field URLs, en...

Symfony: HtmlSanitizer UrlAttributeSanitizer Misses URL Attributes

Description Symfony\Component\HtmlSanitizer\Visitor\AttributeSanitizer\UrlAttributeSanitizer::getSupportedAttributes enumerates the attribute names whose values are scrubbed through UrlSanitizer::sanitize scheme and host allow-lists, javascript: rejection, BiDi check, etc.. The list is 'src',...

Shopware SSO referer trust leading to an arbitrary redirect target

Description This report describes an open redirect in Shopware's public SSO entry point at GET /api/oauth/sso/auth. When the endpoint is reached without the expected SSO session state, the application falls back to the request's Referer header and uses that value as the redirect destination. In t...

Astra Linux – Vulnerability in Thunderbird

If a Thunderbird user responded to a crafted HTML email containing a meta tag, where the meta tag had the http-equiv="refresh" attribute, and the content attribute specified a URL, then Thunderbird would initiate a network request to that URL, regardless of any configuration settings that block...

Nuxt: Reflected XSS in `navigateTo()` external redirect

Summary navigateTo with external: true generates a server-side HTML redirect body containing a tag. The destination URL is only sanitized by replacing " with %22, leaving , &, and ' unencoded. An attacker who can influence the URL passed to navigateTourl, external: true can break out of the...

GHSA-FX6J-W5W5-H468 Nuxt: Reflected XSS in `navigateTo()` external redirect

Summary navigateTo with external: true generates a server-side HTML redirect body containing a tag. The destination URL is only sanitized by replacing " with %22, leaving , &, and ' unencoded. An attacker who can influence the URL passed to navigateTourl, external: true can break out of the...

CVE-2026-39376

FastFeedParser is a high performance RSS, Atom and RDF parser. Prior to 0.5.10, when parse fetches a URL that returns an HTML page containing a tag, it recursively calls itself with the redirect URL — with no depth limit, no visited-URL deduplication, and no redirect count cap. An...

EUVD-2026-19915

FastFeedParser has an infinite redirect loop DoS via meta-refresh chain...

Uncontrolled Recursion

Overview fastfeedparser is a High performance RSS, Atom, JSON and RDF feed parser in Python Affected versions of this package are vulnerable to Uncontrolled Recursion through the parse function when processing HTML responses containing a tag, which leads to unbounded recursion without a redirect...

FastFeedParser has an infinite redirect loop DoS via meta-refresh chain

Summary When parse fetches a URL that returns an HTML page containing a tag, it recursively calls itself with the redirect URL — with no depth limit, no visited-URL deduplication, and no redirect count cap. An attacker-controlled server that returns an infinite chain of HTML meta-refresh response...

GHSA-4GX2-PC4F-WQ37 FastFeedParser has an infinite redirect loop DoS via meta-refresh chain

Summary When parse fetches a URL that returns an HTML page containing a tag, it recursively calls itself with the redirect URL — with no depth limit, no visited-URL deduplication, and no redirect count cap. An attacker-controlled server that returns an infinite chain of HTML meta-refresh response...

PYSEC-2026-60

FastFeedParser is a high performance RSS, Atom and RDF parser. Prior to 0.5.10, when parse fetches a URL that returns an HTML page containing a tag, it recursively calls itself with the redirect URL — with no depth limit, no visited-URL deduplication, and no redirect count cap. An...

CVE-2026-39376

FastFeedParser is a high performance RSS, Atom and RDF parser. Prior to 0.5.10, when parse fetches a URL that returns an HTML page containing a tag, it recursively calls itself with the redirect URL — with no depth limit, no visited-URL deduplication, and no redirect count cap. An...

PYSEC-2026-60

FastFeedParser is a high performance RSS, Atom and RDF parser. Prior to 0.5.10, when parse fetches a URL that returns an HTML page containing a tag, it recursively calls itself with the redirect URL — with no depth limit, no visited-URL deduplication, and no redirect count cap. An...

CVE-2026-39376

FastFeedParser is a high performance RSS, Atom and RDF parser. Prior to 0.5.10, when parse fetches a URL that returns an HTML page containing a tag, it recursively calls itself with the redirect URL — with no depth limit, no visited-URL deduplication, and no redirect count cap. An...

CVE-2026-39376 FastFeedParser has an infinite redirect loop DoS via meta-refresh chain

FastFeedParser is a high performance RSS, Atom and RDF parser. Prior to 0.5.10, when parse fetches a URL that returns an HTML page containing a tag, it recursively calls itself with the redirect URL — with no depth limit, no visited-URL deduplication, and no redirect count cap. An...

CVE-2026-39376 FastFeedParser has an infinite redirect loop DoS via meta-refresh chain

FastFeedParser is a high performance RSS, Atom and RDF parser. Prior to 0.5.10, when parse fetches a URL that returns an HTML page containing a tag, it recursively calls itself with the redirect URL — with no depth limit, no visited-URL deduplication, and no redirect count cap. An...

CVE-2026-39376

FastFeedParser is affected by CVE-2026-39376 prior to version 0.5.10. When parse() fetches a URL returning an HTML page with a tag, it may recursively call itself on the redirect URL without a depth limit, visited-URL deduplication, or redirect count cap. An attacker-controlled server that emits...

PT-2026-31006

FastFeedParser is a high performance RSS, Atom and RDF parser. Prior to 0.5.10, when parse fetches a URL that returns an HTML page containing a tag, it recursively calls itself with the redirect URL — with no depth limit, no visited-URL deduplication, and no redirect count cap. An...