Kimai has Server-Side Request Forgery in Invoice PDF Rendering via Markdown Image URLs
Kimai is an open-source time tracking application. Versions prior to 2.58.0 contain a server-side request forgery vulnerability in their invoice PDF preview and generation workflow. If an attacker can control Markdown content that is later rendered into an invoice PDF, such as `Customer.invoiceText`, the server-side PDF renderer will fetch remote image URLs embedded in Markdown image syntax. This allows the application server to issue outbound requests to attacker-controlled or internal targets during PDF rendering. The behavior can be used for internal network probing, server-side reachability checks, and potentially follow-on exploitation depending on deployment environment and accessible internal services. Version 2.58.0 patches the issue.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-49865
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 16:36 UTC · Revision 1
Source evidence
Kimai has Server-Side Request Forgery in Invoice PDF Rendering via Markdown Image URLs
core-osv · Original sourcePublished 11 Sept 2026, 21:08 UTC
Kimai is an open-source time tracking application. Versions prior to 2.58.0 contain a server-side request forgery vulnerability in their invoice PDF preview and generation workflow. If an attacker can control Markdown content that is later rendered into an invoice PDF, such as `Customer.invoiceText`, the server-side PDF renderer will fetch remote image URLs embedded in Markdown image syntax. This allows the application server to issue outbound requests to attacker-controlled or internal targets during PDF rendering. The behavior can be used for internal network probing, server-side reachability checks, and potentially follow-on exploitation depending on deployment environment and accessible internal services. Version 2.58.0 patches the issue.
osv:CVE-2026-49865
Complete source record
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"url": "https://osv.dev/vulnerability/CVE-2026-49865",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Kimai has Server-Side Request Forgery in Invoice PDF Rendering via Markdown Image URLs",
"summary": "Kimai is an open-source time tracking application. Versions prior to 2.58.0 contain a server-side request forgery vulnerability in their invoice PDF preview and generation workflow. If an attacker can control Markdown content that is later rendered into an invoice PDF, such as `Customer.invoiceText`, the server-side PDF renderer will fetch remote image URLs embedded in Markdown image syntax. This allows the application server to issue outbound requests to attacker-controlled or internal targets during PDF rendering. The behavior can be used for internal network probing, server-side reachability checks, and potentially follow-on exploitation depending on deployment environment and accessible internal services. Version 2.58.0 patches the issue.",
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"modified": "2026-10-28T02:30:20.920776214Z",
"provider": "osv",
"references": [
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"https://github.com/kimai/kimai/security/advisories/GHSA-pj8j-p4g4-4vw8",
"https://nvd.nist.gov/vuln/detail/CVE-2026-49865"
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"source_id": "core-osv",
"document_id": 487225,
"published_at": "2026-09-11T21:08:47.179+00:00"
}