CVSS 4.0
8.7 highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NCVE-2026-123616 imgproxy 3.3.0 before 4.0.16 Memory Exhaustion DoS via ICO Loader
High (8.7) in imgproxy imgproxy. EPSS 0.5% estimated probability of exploitation activity in the next 30 days. Fixed in github.com/imgproxy/imgproxy/v3 4.0.16.
On this page
imgproxy from 3.3.0 before 4.0.16 contains an unbounded memory allocation vulnerability in the ICO loader that fails to validate the data_size field. Attackers can supply a crafted 23-byte ICO file declaring a ~4GB data_size to trigger memory exhaustion and worker crashes without authentication.
Severity
CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- EPSS
- 0.5% estimated probability of exploitation activity in the next 30 days; 42nd percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CISA's assessment (SSVC)
- Exploitation: PoC · Automatable: yes · Technical impact: partial, assessed 2026-11-12. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- CWE
- CWE-789 Memory Allocation with Excessive Size Value
- Published
- Modified
- Assigned by
- VulnCheck (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
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Affected
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| imgproxy | from 3.3.0 before 4.0.16 |
Fix and patched versions
github.com/imgproxy/imgproxy/v3(Go): fixed in 4.0.16github.com/imgproxy/imgproxy/v4(Go): fixed in 4.0.16
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-mmq5-xm89-9pfg | Go | github.com/imgproxy/imgproxy/v3 | >=3.3.0 <4.0.16 | 4.0.16 |
| GO-2026-6898 | Go | github.com/imgproxy/imgproxy | all versions | no fix published |
| GO-2026-6898 | Go | github.com/imgproxy/imgproxy/v2 | all versions | no fix published |
| GO-2026-6898 | Go | github.com/imgproxy/imgproxy/v3 | >=3.3.0 | no fix published |
| GO-2026-6898 | Go | github.com/imgproxy/imgproxy/v4 | <4.0.16 | 4.0.16 |