CVE-2026-59198

Pillow TGA RLE encoder can serialize up to ~57 KB of adjacent heap data into generated images

Pillow is a Python imaging library. From 5.2.0 until 12.3.0, Pillow's TGA RLE encoder reads past its packed row buffer when saving a mode 1 image with TGA RLE compression, allowing adjacent process heap bytes to be copied into the generated TGA file. This issue is fixed in version 12.3.0.

Affected

python-pillow · Pillow

CVSS v3.1 NVD

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 GITHUB

6.5 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L

EPSS

0.31% chance of exploitation in the next 30 days, 23rd percentile

Published

2026-07-14

Proof-of-concept exploits (1)

• advisories/GHSA-fj7v-r99m-22gq

Security advisories

• python-pillow/Pillow/security/advisories/GHSA-fj7v-r99m-22gq
• python-pillow/Pillow/pull/9709

References

• CVE Record
• NVD entry