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Vulnerability record · CVE-2020-11538 · published 25 June 2020

CVE-2020-11538: Python pillow out-of-bounds read vulnerability

Python · Pillow

In libImaging/SgiRleDecode.c in Pillow through 7.0.0, a number of out-of-bounds reads exist in the parsing of SGI image files, a different issue than CVE-2020-5311.

8.1 CVSS 3.1 High EPSS 2.5% · top 15.8% CWE-125 · Out-of-bounds read
8.1CVSS 3.1 base score, v2 6.8
2.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

Description

In libImaging/SgiRleDecode.c in Pillow through 7.0.0, a number of out-of-bounds reads exist in the parsing of SGI image files, a different issue than CVE-2020-5311.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/python-pillow/Pillow/pull/4504 Issue TrackingPatch
https://github.com/python-pillow/Pillow/pull/4538 Issue TrackingPatch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEBCPE4F2VHTIT6EZA2YZQZ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HOKHNWV2VS5GESY7IBD237E
https://pillow.readthedocs.io/en/stable/releasenotes/7.1.0.html Product
https://pillow.readthedocs.io/en/stable/releasenotes/index.html Release Notes
https://usn.ubuntu.com/4430-1/ Third Party Advisory
https://usn.ubuntu.com/4430-2/ Third Party Advisory
https://github.com/python-pillow/Pillow/pull/4504 Issue TrackingPatch
https://github.com/python-pillow/Pillow/pull/4538 Issue TrackingPatch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEBCPE4F2VHTIT6EZA2YZQZ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HOKHNWV2VS5GESY7IBD237E
https://pillow.readthedocs.io/en/stable/releasenotes/7.1.0.html Product
https://pillow.readthedocs.io/en/stable/releasenotes/index.html Release Notes
https://usn.ubuntu.com/4430-1/ Third Party Advisory
https://usn.ubuntu.com/4430-2/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-11538), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.