01 Record
CVE-2026-96637
Pillow: Decompression bomb check bypass in SpiderImagePlugin.seek() leads to unbounded allocation DoS
HighPUBLISHEDCNA: GitHub_M
CNA base score7.1 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
02 Description
Pillow: Decompression bomb check bypass in SpiderImagePlugin.seek() leads to unbounded allocation DoS
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- Not scored by EPSS
- EPSS percentile
- Not scored by EPSS
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Not recorded
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-10-21 21:01Z1 HR AGO
- Last updated
- 2026-10-21 21:01Z1 HR AGO
- Reserved
- 2026-09-23
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.1)
- CNA CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- Weaknesses
- Data version
- 5.2
- Document digest
- 27acb57f4b21a61f4e0dea98cc56f7647aa8786f24718306bdd71f63a196e70a
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comhttps://github.com/python-pillow/Pillow/security/advisories/GHSA-g842-9rc4-69pw
- github.comhttps://github.com/python-pillow/Pillow/pull/10076
- github.comhttps://github.com/python-pillow/Pillow/commit/7cb0e02389d8aac2a60896a490f572db0b07b841
- github.comhttps://github.com/python-pillow/Pillow/releases/tag/13.0.0