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.
CVE-2026-59198
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(low)
- EPSS
- 23.3%
- KEV
- Not listed
Published
July 14, 2026
Last Modified
July 14, 2026
References (5)
- security-advisories@githubhttps://github.com/python-pillow/Pillow/commit/eada3cbd7fb9963ee90673fb7b5270124a0d5f4b
- security-advisories@githubhttps://github.com/python-pillow/Pillow/pull/9709
- security-advisories@githubhttps://github.com/python-pillow/Pillow/releases/tag/12.3.0
- security-advisories@githubhttps://github.com/python-pillow/Pillow/security/advisories/GHSA-fj7v-r99m-22gq
- 134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/python-pillow/Pillow/security/advisories/GHSA-fj7v-r99m-22gq
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 6× in last 7d / 6× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-15 16:57 UTCEPSS rescore
- 2026-07-15 16:57 UTCEPSS rescore
- 2026-07-15 16:38 UTCEG score recompute▲ 1.00
- 2026-07-14 21:22 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
- 2026-07-14 16:11 UTCEG score recompute
- 2026-07-14 16:10 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Same CWE
10 shownCWE-125
- CVE-2014-2898EG 9.8CRITICAL
- CVE-2014-2897EG 9.8CRITICAL
- CVE-2014-2896EG 9.8CRITICAL
- CVE-2015-9290EG 9.8CRITICAL
- CVE-2016-10749EG 9.8CRITICAL
- CVE-1999-0006EG 9.8EPSS 96%CRITICAL
- CVE-2014-3180EG 9.1CRITICAL
- CVE-2014-1508EG 9.1EPSS 90%CRITICAL
- CVE-2016-5198NVD 8.8EG 9.0 KEVEPSS 98%HIGH
- CVE-2016-4523NVD 7.5EG 9.0 KEVEPSS 98%HIGH
Frequently asked(5)
What is CVE-2026-59198?
When was CVE-2026-59198 disclosed?
Is CVE-2026-59198 actively exploited?
What is the CVSS score of CVE-2026-59198?
How do I remediate CVE-2026-59198?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-59198
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