CVE catalog
CVE-2021-28676
pillow: CVE-2021-28676
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.50% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | pillow | sid | 13.0.0-1 | fixed |
| Debian | pillow | forky | 12.3.0-1 | fixed |
| Debian | pillow | trixie | 11.1.0-5+deb13u4 | fixed |
| Debian | pillow | trixie-security | 11.1.0-5+deb13u3 | fixed |
| Debian | pillow | bookworm | 9.4.0-1.1+deb12u1 | fixed |
| Debian | pillow | bookworm-security | 9.4.0-1.1+deb12u1 | fixed |
| Alpine | py3-pillow | 3.14 | 8.2.0-r0 | fixed |
| Alpine | py3-pillow | 3.15 | 8.2.0-r0 | fixed |
| Ubuntu | pillow | pro | 2.9.0-1 | vulnerable |
| Ubuntu | pillow | pro | 3.0.0-1 | vulnerable |
| Ubuntu | pillow | pro | 3.0.0-1build1 | vulnerable |
| Ubuntu | pillow | pro | 3.1.0-1 | vulnerable |
| Ubuntu | pillow | pro | 3.1.1-1 | vulnerable |
| Ubuntu | pillow | pro | 3.1.2-0ubuntu1 | vulnerable |
| Ubuntu | pillow | pro | 3.1.2-0ubuntu1.1 | vulnerable |
| Ubuntu | pillow | pro | 3.1.2-0ubuntu1.3 | vulnerable |
| Ubuntu | pillow | pro | 3.1.2-0ubuntu1.4 | vulnerable |
| Ubuntu | pillow | pro | 3.1.2-0ubuntu1.5 | vulnerable |
| Ubuntu | pillow | pro | 3.1.2-0ubuntu1.6 | vulnerable |
| Ubuntu | pillow | pro | 3.1.2-0ubuntu1.6+esm1 | vulnerable |
| Ubuntu | pillow | pro | 3.1.2-0ubuntu1.6+esm2 | vulnerable |
| Ubuntu | pillow | pro | 3.1.2-0ubuntu1.6+esm3 | fixed |
| Ubuntu | pillow | 18.04 | 4.1.1-3build2 | vulnerable |
| Ubuntu | pillow | 18.04 | 4.3.0-2ubuntu1 | vulnerable |
| Ubuntu | pillow | 18.04 | 5.0.0-1 | vulnerable |
| Ubuntu | pillow | 18.04 | 5.1.0-1 | vulnerable |
| Ubuntu | pillow | 18.04 | 5.1.0-1ubuntu0.2 | vulnerable |
| Ubuntu | pillow | 18.04 | 5.1.0-1ubuntu0.3 | vulnerable |
| Ubuntu | pillow | 18.04 | 5.1.0-1ubuntu0.4 | vulnerable |
| Ubuntu | pillow | 18.04 | 5.1.0-1ubuntu0.5 | vulnerable |
| Ubuntu | pillow | 18.04 | 5.1.0-1ubuntu0.6 | fixed |
| Ubuntu | pillow | 20.04 | 6.1.0-1 | vulnerable |
| Ubuntu | pillow | 20.04 | 6.1.0-1build1 | vulnerable |
| Ubuntu | pillow | 20.04 | 6.2.1-2 | vulnerable |
| Ubuntu | pillow | 20.04 | 7.0.0-4 | vulnerable |
| Ubuntu | pillow | 20.04 | 7.0.0-4build1 | vulnerable |
| Ubuntu | pillow | 20.04 | 7.0.0-4ubuntu0.1 | vulnerable |
| Ubuntu | pillow | 20.04 | 7.0.0-4ubuntu0.2 | vulnerable |
| Ubuntu | pillow | 20.04 | 7.0.0-4ubuntu0.3 | vulnerable |
| Ubuntu | pillow | 20.04 | 7.0.0-4ubuntu0.4 | fixed |
| Ubuntu | pillow-python2 | pro | 6.2.1-3~build1 | vulnerable |
| Ubuntu | pillow-python2 | pro | 6.2.1-3 | vulnerable |
| Ubuntu | pillow-python2 | pro | 6.2.1-3ubuntu0.1~esm1 | vulnerable |
| Ubuntu | pillow-python2 | pro | 6.2.1-3ubuntu0.1~esm2 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | pillow | source | sid | 8.1.2+dfsg-0.2 | not yet assigned | Not reported | [989062] |
| Debian | pillow | source | forky | 8.1.2+dfsg-0.2 | not yet assigned | Not reported | [989062] |
| Debian | pillow | source | trixie | 8.1.2+dfsg-0.2 | not yet assigned | Not reported | [989062] |
| Debian | pillow | source | bookworm | 8.1.2+dfsg-0.2 | not yet assigned | Not reported | [989062] |
| Alpine | py3-pillow | apk | 3.14 | 8.2.0-r0 | Not reported | ALPINE-CVE-2021-28676 | Not reported |
| Alpine | py3-pillow | apk | 3.15 | 8.2.0-r0 | Not reported | ALPINE-CVE-2021-28676 | Not reported |
| Ubuntu | pillow | deb | pro | 3.1.2-0ubuntu1.6+esm3 | Not reported | UBUNTU-CVE-2021-28676 | Not reported |
| Ubuntu | pillow | deb | 18.04 | 5.1.0-1ubuntu0.6 | Not reported | UBUNTU-CVE-2021-28676 | Not reported |
| Ubuntu | pillow | deb | 20.04 | 7.0.0-4ubuntu0.4 | Not reported | UBUNTU-CVE-2021-28676 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [python3-pil]Unknown
Source package: [pillow]
Details (4)
9.4.0-1.1+deb12u1· amd64 · bookwormFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
9.4.0-1.1+deb12u1· arm64 · bookwormFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
9.4.0-1.1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
9.4.0-1.1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
- [python3-pil.imagetk]Unknown
Source package: [pillow]
Details (4)
9.4.0-1.1+deb12u1· amd64 · bookwormFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
9.4.0-1.1+deb12u1· arm64 · bookwormFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
9.4.0-1.1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
9.4.0-1.1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
- [python-pil-doc]Unknown
Source package: [pillow]
Details (4)
9.4.0-1.1+deb12u1· all · bookwormFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
9.4.0-1.1+deb12u1· all · bookwormFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
9.4.0-1.1+deb12u1· all · bookworm-securityFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
9.4.0-1.1+deb12u1· all · bookworm-securityFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · bookworm; dsa · pillow · debian · 12
[Debian 13 (Trixie)]
- [python3-pil]Unknown
Source package: [pillow]
Details (4)
11.1.0-5+deb13u4· amd64 · trixieFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · 13
11.1.0-5+deb13u4· arm64 · trixieFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · 13
11.1.0-5+deb13u3· amd64 · trixie-securityFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · 13
11.1.0-5+deb13u3· arm64 · trixie-securityFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · 13
- [python3-pil.imagetk]Unknown
Source package: [pillow]
Details (4)
11.1.0-5+deb13u4· amd64 · trixieFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · 13
11.1.0-5+deb13u4· arm64 · trixieFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · 13
11.1.0-5+deb13u3· amd64 · trixie-securityFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · 13
11.1.0-5+deb13u3· arm64 · trixie-securityFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · 13
- [python-pil-doc]Unknown
Source package: [pillow]
Details (4)
11.1.0-5+deb13u4· all · trixieFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · 13
11.1.0-5+deb13u4· all · trixieFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · 13
11.1.0-5+deb13u3· all · trixie-securityFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · 13
11.1.0-5+deb13u3· all · trixie-securityFixed · Fixed:
8.1.2+dfsg-0.2dsa · pillow · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2021_4149.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2021-28676]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-28676]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-28676]
- [https://security-tracker.debian.org/tracker/CVE-2021-28676]
- [https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-28676.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2022-1835.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]