PrivateBin has reflected JSON injection in backend responses via unescaped REQUEST_URI

Vulnerability Details A reflected JSON injection allows an attacker to return arbitrary data in the JSON endpoints like /?jsonld= and /?pasteid. Root Cause Request::getRequestUri sanitizes $SERVER'REQUESTURI' with FILTERSANITIZEURL: php public function getRequestUri $uri =...

CVE-2026-55891 PrivateBin: Reflected JSON injection in backend responses via unescaped REQUEST_URI

PrivateBin is an online pastebin where the server has zero knowledge of pasted data. Prior to 2.0.5, Request::getRequestUri in lib/Request.php passes $SERVER'REQUESTURI' through FILTERSANITIZEURL, which does not remove quotation marks, angle brackets, or apostrophes, and Controller::init stores t...

CVE-2026-55891 PrivateBin: Reflected JSON injection in backend responses via unescaped REQUEST_URI

PrivateBin is an online pastebin where the server has zero knowledge of pasted data. Prior to 2.0.5, Request::getRequestUri in lib/Request.php passes $SERVER'REQUESTURI' through FILTERSANITIZEURL, which does not remove quotation marks, angle brackets, or apostrophes, and Controller::init stores t...

CVE-2026-55891

PrivateBin , a zero-knowledge PHP pastebin, is vulnerable to reflected JSON injection in its JSON-LD response paths (/?jsonld= and /?pasteid) in versions prior to 2.0.5 . The root cause is that FILTER_SANITIZE_URL does not strip quotation marks from $_SERVER['REQUEST_URI'], and the unsanitized va...

CVE-2026-55891 PrivateBin: Reflected JSON injection in backend responses via unescaped REQUEST_URI

PrivateBin is an online pastebin where the server has zero knowledge of pasted data. Prior to 2.0.5, Request::getRequestUri in lib/Request.php passes $SERVER'REQUESTURI' through FILTERSANITIZEURL, which does not remove quotation marks, angle brackets, or apostrophes, and Controller::init stores t...

CVE-2026-55891: Improper Encoding or Escaping of Output

PrivateBin is an online pastebin where the server has zero knowledge of pasted data. Prior to 2.0.5, Request::getRequestUri in lib/Request.php passes $SERVER'REQUESTURI' through FILTERSANITIZEURL, which does not remove quotation marks, angle brackets, or apostrophes, and Controller::init stores t...

PT-2026-83351

PrivateBin is an online pastebin where the server has zero knowledge of pasted data. Prior to 2.0.5, Request::getRequestUri in lib/Request.php passes $ SERVER'REQUEST URI' through FILTER SANITIZE URL, which does not remove quotation marks, angle brackets, or apostrophes, and Controller:: init...

BIT-DISCOURSE-2026-53960 Discourse: Hidden first-post excerpt is emitted in Q&A schema JSON-LD

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, hidden or otherwise unviewable first-post content was leaked as an excerpt in the publicly-served Q&A QAPage JSON-LD structured data, exposing it to any unauthenticated visitor and to search-engi...

PT-2026-79845

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, hidden or otherwise unviewable first-post content was leaked as an excerpt in the publicly-served Q&A QAPage JSON-LD structured data, exposing it to any unauthenticated visitor and to search-engi...

CVE-2026-53960

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, hidden or otherwise unviewable first-post content was leaked as an excerpt in the publicly-served Q&A QAPage JSON-LD structured data, exposing it to any unauthenticated visitor and to search-engi...

CVE-2026-53960

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, hidden or otherwise unviewable first-post content was leaked as an excerpt in the publicly-served Q&A QAPage JSON-LD structured data, exposing it to any unauthenticated visitor and to search-engi...

CVE-2026-53960

Discourse leaked hidden first-post excerpts in publicly served QAPage JSON-LD structured data, accessible to unauthenticated visitors and search-engine crawlers. Fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0. No exploitation reported. CVSS 5.3 MEDIUM (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:...

CVE-2026-53960 Discourse: Hidden first-post excerpt is emitted in Q&A schema JSON-LD

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, hidden or otherwise unviewable first-post content was leaked as an excerpt in the publicly-served Q&A QAPage JSON-LD structured data, exposing it to any unauthenticated visitor and to search-engi...

CVE-2026-53960 Discourse: Hidden first-post excerpt is emitted in Q&A schema JSON-LD

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, hidden or otherwise unviewable first-post content was leaked as an excerpt in the publicly-served Q&A QAPage JSON-LD structured data, exposing it to any unauthenticated visitor and to search-engi...

EUVD-2026-60238

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, hidden or otherwise unviewable first-post content was leaked as an excerpt in the publicly-served Q&A QAPage JSON-LD structured data, exposing it to any unauthenticated visitor and to search-engi...

CVE-2026-53960: Missing Authorization

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, hidden or otherwise unviewable first-post content was leaked as an excerpt in the publicly-served Q&A QAPage JSON-LD structured data, exposing it to any unauthenticated visitor and to search-engi...

PT-2026-76680

Name of the Vulnerable Software and Affected Versions Discourse versions prior to 2026.1.6 Discourse versions prior to 2026.5.2 Discourse versions prior to 2026.6.1 Discourse versions prior to 2026.7.0 Description Hidden or unviewable first-post content is leaked as an excerpt within the...

CVE-2026-47746

Misskey is an open source, federated social media platform. Versions 12.37.0 and later, but prior to 2026.5.4, are vulnerable to timing attacks during JSON-LD signature validation and the compaction process. Because the JSON-LD parsing context is not shared between signature verification and...

CVE-2026-47746 Misskey: JSON-LD signature validation + compaction is vulnerable to timing attacks

Misskey is an open source, federated social media platform. Versions 12.37.0 and later, but prior to 2026.5.4, are vulnerable to timing attacks during JSON-LD signature validation and the compaction process. Because the JSON-LD parsing context is not shared between signature verification and...

CVE-2026-47746 Misskey: JSON-LD signature validation + compaction is vulnerable to timing attacks

Misskey is an open source, federated social media platform. Versions 12.37.0 and later, but prior to 2026.5.4, are vulnerable to timing attacks during JSON-LD signature validation and the compaction process. Because the JSON-LD parsing context is not shared between signature verification and...