CVE-2020-5311

CRITICALNVD 9.89.8—

9.8

libImaging/SgiRleDecode.c in Pillow before 6.2.2 has an SGI buffer overflow.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 80.0%
KEV: Not listed

Published

January 3, 2020

Last Modified

November 21, 2024

Advisory Details (7)

Auto-updated May 27, 2026

Patch available. Sources: redhat, github_commit.

redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2020:0580

redhat Patch Available

Affected: Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2020:0566

generic

[SECURITY] [DSA 4631-1] pillow security update

https://www.debian.org/security/2020/dsa-4631

generic

6.2.2 (2020-01-02) - Pillow (PIL Fork) 12.2.0 documentation

https://pillow.readthedocs.io/en/stable/releasenotes/6.2.2.html

generic

[SECURITY] Fedora 30 Update: python-pillow-5.4.1-4.fc30 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3DUMIBUYGJRAVJCTFUWBRLVQKOUTVX5P/

generic

[SECURITY] Fedora 31 Update: python-pillow-6.2.2-1.fc31 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MMU3WT2X64GS5WHDPKKC2WZA7UIIQ3A/

github_commit

commit a79b65c47c7d (python-pillow/Pillow)

Fix landed in python-pillow/Pillow commit a79b65c47c7d — awaiting tagged release

https://github.com/python-pillow/Pillow/commit/a79b65c47c7dc6fe623aadf09aa6192fc54548f3

Patch Availability(4)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	python3-pil.imagetk (3.1.2-0ubuntu1.3) @ xenial	2026-05-27	ubuntu
redhat	quay/quay-rhel8:v3.4.0-51	2021-02-04	redhat
redhat	python-pillow-0:5.1.1-10.el8_1	2020-02-24	redhat
redhat	python-pillow-0:5.1.1-10.el8_0	2020-02-20	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)

PyPI(1)

Package	Vulnerable range	Fixed in	Dependents
pillow	1.0 ... 6.2.1 (68 versions)	6.2.2	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-120Buffer Copy without Checking Size (Classic Buffer Overflow)

All Vendor Advisories

(4)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 8× in last 7d / 8× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 09:41 UTCEG score recompute
2026-05-27 09:41 UTCVendor advisory
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2020-5311?

CVE-2020-5311 is a critical vulnerability published on January 3, 2020. libImaging/SgiRleDecode.c in Pillow before 6.2.2 has an SGI buffer overflow.

When was CVE-2020-5311 disclosed?

CVE-2020-5311 was first published in the National Vulnerability Database on January 3, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-5311 actively exploited?

CVE-2020-5311 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 80.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-5311?

CVE-2020-5311 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2020-5311?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-5311, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-5311

Explore →

Is Your Infrastructure Affected by CVE-2020-5311?

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CVE-2020-5311

📅 Published

🔄 Last Modified

📋 Advisory Details (7)

[SECURITY] [DSA 4631-1] pillow security update

6.2.2 (2020-01-02) - Pillow (PIL Fork) 12.2.0 documentation

[SECURITY] Fedora 30 Update: python-pillow-5.4.1-4.fc30 - package-announce - Fedora mailing-lists

[SECURITY] Fedora 31 Update: python-pillow-6.2.2-1.fc31 - package-announce - Fedora mailing-lists

commit a79b65c47c7d (python-pillow/Pillow)

Patch Availability(4)

Affected Packages

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-5311?

Published

Last Modified

Advisory Details (7)

Frequently asked(5)