CVE-2026-59197: Native heap out-of-bounds write
CVE-2026-59197 key facts
- CISA KEV
- Not listed (catalogue checked )
- Highest advisory rating
- High
- CVSS base score
- 8.2 (Red Hat)
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H(Red Hat)
- Weakness
- CWE-787
- Fixed releases
- Red Hat: 12.3.0, python3.12-pillow-0:12.3.0-1.el8ap, python3.12-pillow-0:12.3.0-1.el9ap, python-pillow-0:5.1.1-23.el8_10, python-pillow-0:5.1.1-15.el8_4.2, python-pillow-0:5.1.1-20.el8_6.1 and 44 more in the advisory
- Listed by VulniPulse
- Record changed
Ratings, versions and fixes are quoted from the vendor advisories that cover only CVE-2026-59197; each belongs to its advisory, not to every product listed. How records are collected and checked.
How do I fix CVE-2026-59197?
Upgrade to a fixed release named by the vendor:
- Red Hat: 12.3.0, python3.12-pillow-0:12.3.0-1.el8ap, python3.12-pillow-0:12.3.0-1.el9ap, python-pillow-0:5.1.1-23.el8_10, python-pillow-0:5.1.1-15.el8_4.2, python-pillow-0:5.1.1-20.el8_6.1
Vendor advisories for CVE-2026-59197
Red Hat
1 advisory- Advisory severityHigh8.2
High [CVE-2026-59197] Native heap out-of-bounds write
CVE-2026-59197Source published Source updated
Pillow is a Python imaging library. Prior to 12.3.0, Pillow's public rank-filter API can trigger a native heap out-of-bounds write when given a very large odd filter size because ImageFilter. RankFilter.filter() calls image.expand(size // 2, size // 2) before rank-filter size validation and ImagingExpand() computes output dimensions with unchecked signed int arithmetic. This issue is fixed in version 12.3.0. This can lead to denial of service and limited integrity impact via heap corruption. A remote attacker who can drive RankFilter with attacker-controlled sizes may crash the process or corrupt heap memory. Red Hat severity: Important — CVSS 8.2 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H). Weakness: CWE-787. Affected products named by the advisory: Red Hat Ansible Automation…
- Affected products in this advisory
- Red Hat Ansible Automation Platform 2.5 for RHEL 8
- Red Hat Ansible Automation Platform 2.5 for RHEL 9
- Red Hat Ansible Automation Platform 2.6 for RHEL 9
- Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
26 more entries in the full advisory.
- Source-reported affected versions
- < 12.3.0
- Source-reported fixed versions
- 12.3.0
- python3.12-pillow-0:12.3.0-1.el8ap
- python3.12-pillow-0:12.3.0-1.el9ap
- python-pillow-0:5.1.1-23.el8_10
46 more entries in the full advisory.
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
Splunk
1 advisory- Advisory severityHigh
High [CVE-2024-34062 +48] Third-Party Package Updates in Splunk SOAR - October 2026
SVD-2026-1012Source published
This bulletin covers 49 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.
Splunk remedied common vulnerabilities and exposures (CVEs) in third-party packages in Splunk SOAR version 8.7.0 or higher. Affected product named by the advisory: Splunk SOAR 8.7.
- Affected products in this advisory
- Splunk SOAR 8.7
- Source-reported affected versions
- Splunk SOAR Below 8.7.0
- Source-reported fixed versions
- Splunk SOAR 8.7.0
- Mitigation guidance
- Upgrade Splunk SOAR to version 8.7.0 or higher.
References
More Red Hat advisories
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