---
id: "CVE-2026-129173"
page: "https://infrastack.ai/live/CVE-2026-129173"
kind: "vulnerability"
aliases: ["CVE-2026-129173"]
title: "Stirling-PDF: participant details endpoint has insufficient session timeout"
severity: "medium"
cvss: 6.9
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["java", "package", "self-hosted", "stirling-pdf"]
not_affected_if: ["default-config"]
published_at: "2026-11-13T23:17:18+00:00"
first_seen_at: "2026-11-13T23:35:10+00:00"
updated_at: "2026-11-13T23:37:04+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-129173", "first_seen_at": "2026-11-13T23:35:10+00:00"}]
exploit_sources: []
---

# Stirling-PDF: participant details endpoint has insufficient session timeout

Link for people: https://infrastack.ai/live/CVE-2026-129173 (this .md is for agents)

Stirling-PDF up to 3.3.0 has a flaw in its workflow participant details endpoint where the session timeout is too long. An attacker who gets hold of a session may be able to keep using it longer than intended.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the Stirling-PDF version in use; versions up to and including `3.3.0` are listed as affected.
- Confirm whether the workflow feature (WorkflowParticipantController) is deployed and reachable from the network.

## Timeline

- 2026-11-13T23:35:10+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-129173

## From the sources

A security flaw has been discovered in Stirling-Tools Stirling-PDF up to 3.3.0. Affected is the function WorkflowParticipantController.getParticipantDetails of the file app/proprietary/src/main/java/stirling/software/proprietary/workflow/controller/WorkflowParticipantController.java of the component Participant Details Endpoint. Performing a manipulation results in insufficient session timeout value. Remote exploitation of the attack is possible. The vendor was contacted early about this disclosure but did not respond in any way.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_