Vulnerability in Python Pillow
CVE-2021-28676
An issue was discovered in Pillow before 8.2.0. For FLI data, FliDecode did not properly check that the block advance was non-zero, potentially leading to an infinite loop on load.
EPSS: 0.025 (82.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Python Pillow
- Fedoraproject Fedora — versions 33
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Third Party Advisory, Release Notes)
- cve@mitre.org (Third Party Advisory)
- cve@mitre.org (vendor-advisory, Mailing List)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
- cve@mitre.org (mailing-list, Third Party Advisory)
- cve@mitre.org (Patch)
Frequently asked questions
- What is CVE-2021-28676?
- CVE-2021-28676 is a high-severity vulnerability in Python Pillow, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2021-06-02.
- How severe is CVE-2021-28676?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-28676 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.