cbcvebase.
CVE-2026-24480
published 2026-01-27

CVE-2026-24480: QGIS is a free, open source, cross platform geographical information system (GIS) The repository contains a GitHub Actions workflow called "pre-commit checks"…

PriorityP260high8.7CVSS 4.0
AVNACLATNPRLUINVCHVIHVAHSCNSINSANEXCRXIRXARXMAVXMACXMATXMPRXMUIXMVCXMVIXMVAXMSCXMSIXMSAXSXAUXRXVXREXUX
EPSS
0.41%
33.1th percentile
QGIS is a free, open source, cross platform geographical information system (GIS) The repository contains a GitHub Actions workflow called "pre-commit checks" that, before commit 76a693cd91650f9b4e83edac525e5e4f90d954e9, was vulnerable to remote code execution and repository compromise because it used the `pull_request_target` trigger and then checked out and executed untrusted pull request code in a privileged context. Workflows triggered by `pull_request_target` ran with the base repository's credentials and access to secrets. If these workflows then checked out and executed code from the head of an external pull request (which could have been attacker controlled), the attacker could have executed arbitrary commands with elevated privileges. This insecure pattern has been documented as a security risk by GitHub and security researchers. Commit 76a693cd91650f9b4e83edac525e5e4f90d954e9 removed the vulnerable code.

Affected

2 ranges
VendorProductVersion rangeFixed in
debianqgis——
qgisqgis< 76a693cd91650f9b4e83edac525e5e4f90d954e976a693cd91650f9b4e83edac525e5e4f90d954e9

Detection & IOCsextracted from sources · hover to see the quote

hash76a693cd91650f9b4e83edac525e5e4f90d954e9↗
  • →Detect GitHub Actions workflows using the `pull_request_target` trigger that also check out and execute code from the pull request head — this pattern enables untrusted code to run in a privileged context with access to repository secrets. ↗
  • →Audit CI/CD pipeline logs for unexpected command execution or secret access originating from external pull request workflows, particularly in the QGIS 'pre-commit checks' workflow prior to the fix commit. ↗
  • →Monitor for attacker-controlled pull requests to repositories using `pull_request_target` that attempt to inject malicious steps or scripts into the workflow execution environment. ↗
  • ·The vulnerability exists in the GitHub Actions CI/CD workflow configuration of the QGIS project itself, not in the QGIS application binary or libraries distributed in OS packages. Downstream consumers of QGIS packages (e.g., Red Hat, Debian) are not directly exposed. ↗
  • ·The insecure `pull_request_target` + untrusted checkout pattern grants workflows the base repository's credentials and secrets, making any repository using this pattern a potential target for supply-chain compromise. ↗

CVSS provenance

nvdv4.08.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
osv8.7HIGH
vendor_debian8.7LOW
vendor_redhat8.7HIGH
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