GitHub Advisoryadvisory · PyPI

GHSA-pr85-w493-9w3x resdata has Classic Buffer Overflow, Improper Validation of Array Index, NULL Pointer Dereference and Out-of-bounds Read

CRITICAL Published 2026-08-18 Modified 2026-08-18 Official page ↗
Aliases
CVE-2026-55209
Ecosystem
PyPI
Packages
resdata
Severity
Critical
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-120, CWE-125, CWE-129, CWE-476
Reviewed
2026-08-18

Affected packages

• PyPI resdata: < 6.2.9 → fixed in 6.2.9

Description

Impact Prior to version 6.2.9 resdata would not correctly validate input in GRDECL files. The severity rating assumes that resdata is used to parse untrused files in a networking context such as a webservice. Patches The bug has been patched starting with version 6.2.9.

Related

Alias · CVE (1)

  • CVE-2026-55209 resdata is software for reading and writing result files from the Eclipse reservoir simulator. vulnerability

Weakness · CWE (4)

  • CWE-120 Buffer Copy without Checking Size of Input weakness
  • CWE-125 Out-of-bounds Read weakness
  • CWE-129 Improper Validation of Array Index weakness
  • CWE-476 NULL Pointer Dereference weakness

References