CVE-2026-41582 Countly CVE debrief

Who should care

Defenders managing countly-server deployments, especially those using the local filesystem backend, should assess exposure and prioritize patching or mitigation. This includes operators, platform administrators, vulnerability management teams, and security teams responsible for ensuring the security and integrity of product analytics solutions.

Why it matters

CVE-2026-41582 is a high-severity vulnerability in countly-server that allows unauthenticated path traversal, potentially leading to file disclosure. Defenders should prioritize patching or mitigating this issue, especially in environments with unauthenticated access concerns.

• Potential unauthorized file disclosure
• Need to verify and restrict access to public routes
• Possible data exposure through readable server files

Technical summary

The countly-server product analytics solution has an unauthenticated path traversal vulnerability in its public image and screenshot routes. This allows attackers to read internal files by manipulating the routes. The issue is fixed in versions 24.05.50 and 25.03.44. Affected deployments using the local filesystem backend are susceptible to arbitrary file disclosure. Defenders should prioritize patching or mitigating this vulnerability, especially in environments where unauthenticated access is a concern. The vulnerability exists in versions prior to 24.05.50 and 25.03.44.

Defensive priority

Defenders should prioritize patching or mitigating this vulnerability, especially in environments where unauthenticated access is a concern.

Recommended defensive actions

• Patch countly-server to version 24.05.50 or 25.03.44
• Review and restrict access to public image and screenshot routes
• Monitor for suspicious requests to /appimages/*, /memberimages/*, */screenshots/*, /star-rating/images/*, and /dashboards/images/screenshots/*
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The vulnerability is confirmed by the CVE Program and NVD. Details are provided in the source item and references from Countly's security advisories and commit records. Affected deployments using the local filesystem backend are susceptible to arbitrary file disclosure. Defenders should verify and restrict access to public routes, monitor for suspicious requests, and review compensating controls for exposed systems.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.