Kimai has Server-Side Request Forgery in Invoice PDF Rendering via Markdown Image URLs (CVE-2026-49865) | HOL Guard CVE

Medium severityCVE-2026-49865GHSA-PJ8J-P4G4-4VW8

Kimai has Server-Side Request Forgery in Invoice PDF Rendering via Markdown Image URLs

Answer in brief

CVE-2026-49865 records a Medium severity vulnerability in Kimai has Server-Side Request Forgery in Invoice PDF Rendering via Markdown Image URLs. The current sources do not mark it as known exploited. The current feed maps kimai/kimai (composer), kimai/kimai (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 11, 2026Updated Sep 14, 2026Source checked Sep 17, 2026First seen by HOL Jul 10, 2026Material review Sep 14, 2026

Upstream Advisory

Key facts

Risk: Medium
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps kimai/kimai (composer), kimai/kimai (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
kimai/kimaicomposer	<=2.57.0	2.58.0
kimai/kimaigeneric	< 2.58.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for kimai/kimai, kimai/kimai.
Review the reported fix. Update kimai/kimai to 2.58.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Jul 10, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.