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Vulnerability record · CVE-2026-61668 · published 15 September 2026

CVE-2026-61668: Improper certificate validation vulnerability

DIRAC is an interware, meaning a software framework for distributed computing. Prior to versions 8.0.79, 9.0.22, and 9.1.10, WorkloadManagementSystem/Utilities/PilotWrapper.py pilotWrapperScript uses ssl._create_unverified_context to download the second-stage pilot.tar archive without TLS certificate verification and downloads the reference checksum through the same unvalidated channel. An attacker able to redirect or intercept a grid site's network traffic through DNS or routing manipulation can substitute both the executable pilot code and its checksum, causing arbitrary code to run in the pilot context with access to pilot proxy credentials. The fixed implementation validates the server certificate through system trust and X509_CERT_DIR or the grid certificate directory. This issue is fixed in versions 8.0.79, 9.0.22, and 9.1.10.

8.1 CVSS 3.1 High EPSS 0.40% · top 68.8% CWE-295 · Improper certificate validation Received
8.1CVSS 3.1 base score
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
7References
17 Sep 2026Last modified by NVD

Description

DIRAC is an interware, meaning a software framework for distributed computing. Prior to versions 8.0.79, 9.0.22, and 9.1.10, WorkloadManagementSystem/Utilities/PilotWrapper.py pilotWrapperScript uses ssl._create_unverified_context to download the second-stage pilot.tar archive without TLS certificate verification and downloads the reference checksum through the same unvalidated channel. An attacker able to redirect or intercept a grid site's network traffic through DNS or routing manipulation can substitute both the executable pilot code and its checksum, causing arbitrary code to run in the pilot context with access to pilot proxy credentials. The fixed implementation validates the server certificate through system trust and X509_CERT_DIR or the grid certificate directory. This issue is fixed in versions 8.0.79, 9.0.22, and 9.1.10.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

LinkTags
https://github.com/DIRACGrid/DIRAC/commit/68029dfb5ddd8b1e4106851f8e37370aa80ac7ae
https://github.com/DIRACGrid/DIRAC/commit/92e2e26c63b964b8499bee5e9c2e2821a36eac56
https://github.com/DIRACGrid/DIRAC/commit/b332c437d064f66ee46f5b45a90a9f7c4bace38d
https://github.com/DIRACGrid/DIRAC/releases/tag/v8.0.79
https://github.com/DIRACGrid/DIRAC/releases/tag/v9.0.22
https://github.com/DIRACGrid/DIRAC/releases/tag/v9.1.10
https://github.com/DIRACGrid/DIRAC/security/advisories/GHSA-vg99-gr89-qhw9

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Source: NIST National Vulnerability Database (record CVE-2026-61668), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.