CVE-2026-42864: Unauthenticated RCE in FireFighter Incident Management App
The National Vulnerability Database has detailed CVE-2026-42864, a critical vulnerability affecting the FireFighter incident management application prior to version 0.0.54. This flaw allows unauthenticated attackers to achieve remote code execution (RCE) via a server-side request forgery (SSRF) vulnerability in the /api/v2/firefighter/raid/jira_bot endpoint. Despite documentation claiming a Bearer token is required, the endpoint is openly accessible.
Attackers can manipulate the attachments payload to coerce the FireFighter pod into fetching arbitrary URLs. The response is then exfiltrated as an attachment on a newly created Jira ticket. For deployments on EC2/EKS that have not enforced IMDSv2, this directly enables the theft of temporary AWS credentials associated with the pod’s IAM role, leading to potential cloud environment compromise.
This is a severe design flaw. An unauthenticated attacker, if they can reach the ingress, can effectively turn the incident management application into a credential harvesting tool. The fix is available in FireFighter version 0.0.54, which addresses the lack of authentication and URL validation.
What This Means For You
- If your organization uses the FireFighter incident management application, you need to verify its version immediately. Any deployment prior to 0.0.54 is critically vulnerable to unauthenticated credential theft, especially if running on AWS EC2/EKS without IMDSv2 enforcement. Patch to 0.0.54 now, and audit logs for suspicious external connections from FireFighter instances.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-42864: Unauthenticated RCE in FireFighter Incident Management App - Path Traversal
title: CVE-2026-42864: Unauthenticated RCE in FireFighter Incident Management App - Path Traversal
id: scw-2026-05-11-ai-1
status: experimental
level: critical
description: |
Detects attempts to exploit CVE-2026-42864 by targeting the /api/v2/firefighter/raid/jira_bot endpoint with a POST request. The rule specifically looks for path traversal characters ('..%2f') within the URI, indicating an attempt to access arbitrary files or URLs server-side for RCE or credential exfiltration.
author: SCW Feed Engine (AI-generated)
date: 2026-05-11
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-42864/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-method:
- 'POST'
uri|startswith:
- '/api/v2/firefighter/raid/jira_bot'
selection_indicators:
uri|contains:
- '..%2f'
condition: selection AND selection_indicators
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-42864 | SSRF | FireFighter application versions prior to 0.0.54 |
| CVE-2026-42864 | Auth Bypass | FireFighter POST /api/v2/firefighter/raid/jira_bot endpoint |
| CVE-2026-42864 | Information Disclosure | FireFighter attachments payload fetched server-side via httpx.get() with no URL validation |
| CVE-2026-42864 | Misconfiguration | EC2/EKS deployments not enforcing IMDSv2 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 11, 2026 at 22:16 UTC |
This content was AI-rewritten and enriched by Shimi's Cyber World based on the original source. All intellectual property rights remain with the original author.
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