OSGeo GDAL vulnerable to heap-based buffer overflow

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

1.9 · CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P · score source

EPSS

• CVE-2026-8087: 0.22% estimated exploitation activity in the next 30 days; percentile 12.97 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

A security flaw has been discovered in OSGeo gdal up to 3.13.0dev-4. Impacted is the function GDnentries of the file frmts/hdf4/hdf-eos/GDapi.c. Performing a manipulation of the argument DataFieldName results in heap-based buffer overflow. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. Upgrading to version 3.13.0RC1 is recommended to address this issue. The patch is named 184f77dbcc74118c062c05e464c88161d3c37b9b. You should upgrade the affected component.

Published by the source

7 May 2026, 21:30 UTC

Last modified by the source

10 Sep 2026, 03:51 UTC

Source last checked

26 Oct 2026, 13:41 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-h9rh-5ffh-h669

2. Revision 2 · amended · 25 Oct 2026

   Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

3. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-h9rh-5ffh-h669

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# Patch Next advisory brief: CVE-2026-8087

Advisory: OSGeo GDAL vulnerable to heap-based buffer overflow
IDs: CVE-2026-8087, GHSA-h9rh-5ffh-h669
Record: https://patchnext.com/advisories/cve-2026-8087 (revision 3, source checked 26 Oct 2026, 13:41 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Low (CVSS 1.9)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: gdal 3.13.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI gdal: affected < 3.13.0; fixed in 3.13.0

## Suggested inspection (read-only)
- `python -m pip show gdal`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on gdal.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-h9rh-5ffh-h669 (OSV record GHSA-h9rh-5ffh-h669 lists affected ranges: PyPI gdal >=0 <3.13.0 (fixed))
- Verified: https://github.com/advisories/GHSA-h9rh-5ffh-h669 (GitHub-reviewed advisory GHSA-h9rh-5ffh-h669 lists affected ranges: PyPI gdal >=0 <3.13.0)

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