CVE-2026-96778

python3-pillow: Pillow is a Python imaging library

CVE-2026-96778 is fixed in 7 products on 1 platform, first by ALAS2023-2026-3411, released November 10, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
n/a
important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0045
39th percentile

Pillow is a Python imaging library. From 9.4.0 until 13.0.0, ImagingJpegEncode() in src/libImaging/JpegEncode.c can call jpeg_write_marker() for a JPEG COM comment when an ICC profile has exactly filled the 65536-byte encoder buffer. libjpeg writes one byte before checking the exhausted free_in_buffer counter, which then wraps and permits the attacker-controlled comment and subsequent compressed image data to overwrite adjacent heap memory. Re-saving an untrusted image as JPEG while preserving its ICC profile and forwarded comment can crash the process and may enable code execution in suitable runtime and heap layouts. This issue is fixed in version 13.0.0.

Where it's fixed

ProductFixed inFixReleased
Linux
python-pillow-debuginfo · amzn 2023 9.4.0-2.amzn2023.0.12 ALAS2023-2026-3411 Nov 10, 2026
python-pillow-debugsource · amzn 2023 9.4.0-2.amzn2023.0.12 ALAS2023-2026-3411 Nov 10, 2026
python3-pillow · amzn 2023 9.4.0-2.amzn2023.0.12 ALAS2023-2026-3411 Nov 10, 2026
python3-pillow-debuginfo · amzn 2023 9.4.0-2.amzn2023.0.12 ALAS2023-2026-3411 Nov 10, 2026
python3-pillow-devel · amzn 2023 9.4.0-2.amzn2023.0.12 ALAS2023-2026-3411 Nov 10, 2026
python3-pillow-tk · amzn 2023 9.4.0-2.amzn2023.0.12 ALAS2023-2026-3411 Nov 10, 2026
python3-pillow-tk-debuginfo · amzn 2023 9.4.0-2.amzn2023.0.12 ALAS2023-2026-3411 Nov 10, 2026

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