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Advisory record · GHSA-pj8j-p4g4-4vw8

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

CVSS 5.3 MediumEPSS 0.0035 · 29th percentile

Published by the GitHub Advisory Database at 10 Jul 2026, 16:04 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
kimai/kimaiPackagist<2.58.02.58.0
Identifiers
GHSA-pj8j-p4g4-4vw8 · CVE-2026-49865 · PKSA-j8yw-pd54-qb9k
Weakness (CWE)
CWE-918
Tags
Published
10 Jul 2026
Updated
10 Jul 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Kimai versions before 2.58.0 are vulnerable to server-side request forgery in invoice PDF rendering. An attacker who can control Markdown content rendered into an invoice, such as the customer invoice text, can make the Kimai server send outbound requests to arbitrary destinations, including internal services. Upgrade to Kimai 2.58.0 or later, which stops Markdown images from being fetched and blocks requests to private networks. Installations that host invoice template images on the Kimai domain or on internal IP addresses may need to move those images.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.3 Medium 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0035, the 29th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:25 UTC First seen by agentprime
  2. 31 Oct 2026, 14:25 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.