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CVE-2026-34954 MervinPraison CVE debrief

CVE-2026-34954 is a vulnerability in the PraisonAI multi-agent teams system, specifically in the FileTools.download_file() function. Prior to version 1.5.95, this function validates the destination path but does not validate the URL parameter, passing it directly to httpx.stream() with follow_redirects=True. This allows an attacker who controls the URL to reach any host accessible from the server, including cloud metadata services and internal network services. The issue has been patched in version 1.5.95.

Vendor
MervinPraison
Product
PraisonAI
CVSS
HIGH 8.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-03
Original CVE updated
2026-07-24
Advisory published
2026-04-03
Advisory updated
2026-07-24

Who should care

Users of PraisonAI agents version prior to 1.5.95 should be aware of this vulnerability and take immediate action to update to the patched version. This vulnerability could potentially allow attackers to access sensitive information or internal network services.

Technical summary

The vulnerability exists in the FileTools.download_file() function of PraisonAI agents. The function does not properly validate the URL parameter, allowing an attacker to control the URL and access any host accessible from the server. The CVSS score for this vulnerability is 8.6, indicating a high severity. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N. This issue allows an attacker who controls the URL to reach any host accessible from the server including cloud metadata services and internal network services. Users of PraisonAI agents version prior to 1.5.95 should be aware of this vulnerability and take immediate action to update to the patched version 1.5.95.

Defensive priority

High priority should be given to updating PraisonAI agents to version 1.5.95 or later. Additionally, users should review their current usage of the FileTools.download_file() function and ensure that proper validation and sanitization of URLs are performed.

Recommended defensive actions

  • Update PraisonAI agents to version 1.5.95 or later
  • Review and validate URLs used in the FileTools.download_file() function
  • Monitor for suspicious activity and implement compensating controls as needed
  • 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 CVE record was published on 2026-04-03T23:17:06.810Z and was last modified on 2026-07-24T21:10:00.143Z. The NVD entry is currently Analyzed. The vulnerability is related to CWE-918. There is no evidence of exploit or patch details. Users should verify their current usage of the FileTools.download_file() function and ensure that proper validation and sanitization of URLs are performed.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-34954 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-34954

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-34954 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-34954

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental 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.