GHSA-3wvg-mj6g-m9cv · Severity: high · Ecosystem: pip — Pillow Uncontrolled Resource Consumption
Pillow before 8.1.2 allows attackers to cause a denial of service (memory consumption) because the reported size of a contained image is not properly checked for an ICNS container, and thus an attempted memory allocation can be very large.
Conclusion & alert: CVE-2021-27922 is rated High Risk (66.4/100): CVSS High severity, with high exploitation likelihood (EPSS 4.85%, 91th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +4.58% over the last day, indicating growing attacker interest. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.28% | 4.85% | +4.58% |
| 2 | 2026-04-20 | 0.14% | 0.28% | +0.13% |
| 3 | 2025-12-24 | — | 0.14% | — |
Full EPSS history (25 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
GHSA-3wvg-mj6g-m9cv · Severity: high · Ecosystem: pip — Pillow Uncontrolled Resource Consumption
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2021-27922: 1 source package rows (py3-pillow); 8 state rows across 8 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community, edge-main); fixed 8, open 0. | https://security.alpinelinux.org/vuln/CVE-2021-27922 |
debian
|
not yet assigned | CVE-2021-27922 not yet assigned priority: Debian including 1 source packages (pillow), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2021-27922 |
gentoo
|
normal | CVE-2021-27922: 1 GLSA(s) (202107-33), 1 atom(s) (dev-python/pillow); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-27922 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2021-27922 |
suse
|
high | CVE-2021-27922 severity important: SUSE including 16 source package names (python-Pillow, python-Pillow-2.8.1-4.22.1, …), 41 product×package rows across 20 product lines (HPE Helion OpenStack 8, SUSE Liberty Linux 8, … (20 product lines)): Known Not Affected 21, Fixed 20. | https://www.suse.com/security/cve/CVE-2021-27922/ |
ubuntu
|
medium | CVE-2021-27922 medium priority: Ubuntu including 3 source packages (pillow, pillow-python2, python-imaging), 48 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 28, not-affected 11, released 5, ignored 2, needs-triage 2. | https://ubuntu.com/security/CVE-2021-27922 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| python | pillow | < 8.1.1 | cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:* |
| fedoraproject | fedora | 32 | cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* |
| fedoraproject | fedora | 33 | cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* |
| fedoraproject | fedora | 34 | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* |