EUVD-2026-84873

A stored cross-site scripting XSS vulnerability was identified in GitHub Enterprise Server that allowed an authenticated attacker to inject arbitrary HTML attributes into rendered Markdown because the Markdown rendering pipeline rewrote quote characters in already-sanitized HTML without...

CVE-2026-77912

A stored cross-site scripting (XSS) vulnerability exists in GitHub Enterprise Server within the Markdown rendering pipeline . The flaw occurs because the pipeline rewrote quote characters in already-sanitized HTML without performing subsequent re-sanitization, allowing an authenticated attacker t...

lightrag-hku: Stored Cross-Site Scripting (XSS) in the LightRAG WebUI chat/answer renderer via ingested content

Summary The LightRAG WebUI renders assistant/answer chat content as raw HTML — react-markdown is configured with rehypePlugins=rehypeRaw and skipHtml=false and no HTML sanitizer rehype-sanitize, element allow-list, or custom urlTransform. Because answer content is derived from user-ingested...

GHSA-XPJQ-3W4W-W5WR lightrag-hku: Stored Cross-Site Scripting (XSS) in the LightRAG WebUI chat/answer renderer via ingested content

Summary The LightRAG WebUI renders assistant/answer chat content as raw HTML — react-markdown is configured with rehypePlugins=rehypeRaw and skipHtml=false and no HTML sanitizer rehype-sanitize, element allow-list, or custom urlTransform. Because answer content is derived from user-ingested...

GHSA-VV3M-F8X4-7377 lightrag-hku: SSRF via IPv6-transition address bypass (NAT64, IPv4-compatible, 6to4) of the native-markdown image-download guard

Summary LightRAG's native markdown parser downloads external images referenced by an uploaded markdown or textpack document. The only SSRF guard, validatedaddresses in lightrag/parser/markdown/parser.py, resolves the image host and rejects it when the resolved IP is not isglobal. That check is...

lightrag-hku: SSRF via IPv6-transition address bypass (NAT64, IPv4-compatible, 6to4) of the native-markdown image-download guard

Summary LightRAG's native markdown parser downloads external images referenced by an uploaded markdown or textpack document. The only SSRF guard, validatedaddresses in lightrag/parser/markdown/parser.py, resolves the image host and rejects it when the resolved IP is not isglobal. That check is...

CVE-2026-86062

LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, lightragwebui/src/components/retrieval/ChatMessage.tsx renders answer and thinking content with react-markdown, rehypeRaw, and skipHtml=false without an HTML sanitizer. An attacker who can add a document can store r...

CVE-2026-85740

LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, validatedaddresses in lightrag/parser/markdown/parser.py evaluates the literal resolved address with ipaddress.isglobal without consistently classifying an IPv4 address embedded in an IPv6 transition wrapper. A call...

EUVD-2026-84550

LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, lightragwebui/src/components/retrieval/ChatMessage.tsx renders answer and thinking content with react-markdown, rehypeRaw, and skipHtml=false without an HTML sanitizer. An attacker who can add a document can store r...

CVE-2026-86062 LightRAG: Stored Cross-Site Scripting (XSS) in the LightRAG WebUI chat/answer renderer via ingested content

LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, lightragwebui/src/components/retrieval/ChatMessage.tsx renders answer and thinking content with react-markdown, rehypeRaw, and skipHtml=false without an HTML sanitizer. An attacker who can add a document can store r...

CVE-2026-86062

LightRAG (prior to version 1.5.5 ) is vulnerable to Stored Cross-Site Scripting (XSS) in the WebUI chat/answer renderer. The issue exists because lightrag_webui/src/components/retrieval/ChatMessage.tsx uses react-markdown with rehypeRaw and skipHtml=false without an HTML sanitizer. This allows an...

CVE-2026-86062 LightRAG: Stored Cross-Site Scripting (XSS) in the LightRAG WebUI chat/answer renderer via ingested content

LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, lightragwebui/src/components/retrieval/ChatMessage.tsx renders answer and thinking content with react-markdown, rehypeRaw, and skipHtml=false without an HTML sanitizer. An attacker who can add a document can store r...

CVE-2026-85740 LightRAG: SSRF via IPv6-transition address bypass (NAT64, IPv4-compatible, 6to4) of the native-markdown image-download guard

LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, validatedaddresses in lightrag/parser/markdown/parser.py evaluates the literal resolved address with ipaddress.isglobal without consistently classifying an IPv4 address embedded in an IPv6 transition wrapper. A call...

EUVD-2026-84549

LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, validatedaddresses in lightrag/parser/markdown/parser.py evaluates the literal resolved address with ipaddress.isglobal without consistently classifying an IPv4 address embedded in an IPv6 transition wrapper. A call...

CVE-2026-85740 LightRAG: SSRF via IPv6-transition address bypass (NAT64, IPv4-compatible, 6to4) of the native-markdown image-download guard

LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, validatedaddresses in lightrag/parser/markdown/parser.py evaluates the literal resolved address with ipaddress.isglobal without consistently classifying an IPv4 address embedded in an IPv6 transition wrapper. A call...

CVE-2026-85740: Server-Side Request Forgery (SSRF)

LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, validatedaddresses in lightrag/parser/markdown/parser.py evaluates the literal resolved address with ipaddress.isglobal without consistently classifying an IPv4 address embedded in an IPv6 transition wrapper. A call...

PT-2026-96826

Name of the Vulnerable Software and Affected Versions LightRAG versions prior to 1.5.5 Description LightRAG contains a Server-Side Request Forgery SSRF issue in its native markdown parser. The validated addresses function in lightrag/parser/markdown/parser.py fails to consistently decode IPv6...

PT-2026-96828

Name of the Vulnerable Software and Affected Versions LightRAG versions prior to 1.5.5 Description LightRAG WebUI is subject to stored cross-site scripting XSS because it renders assistant answer and thinking content as raw HTML without an HTML sanitizer. The application uses react-markdown...

CVE-2026-77912: Improper Neutralization of Input During Web Page Generation

A stored cross-site scripting XSS vulnerability was identified in GitHub Enterprise Server that allowed an authenticated attacker to inject arbitrary HTML attributes into rendered Markdown because the Markdown rendering pipeline rewrote quote characters in already-sanitized HTML without...

PT-2026-97051

Name of the Vulnerable Software and Affected Versions GitHub Enterprise Server versions 3.17 through 3.17.20 GitHub Enterprise Server versions 3.18 through 3.18.14 GitHub Enterprise Server versions 3.19 through 3.19.11 GitHub Enterprise Server versions 3.20 through 3.20.7 GitHub Enterprise Server...