CVE-2026-123616 json
imgproxy 3.3.0 before 4.0.16 Memory Exhaustion DoS via ICO Loader
published 2026-10-30 9 d ago modified 2026-11-08 16 h ago also EUVD-2026-119375 , GHSA-mmq5-xm89-9pfg , GO-2026-6898
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 41%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- go github.com/imgproxy/imgproxy/v3 4.0.16
- go github.com/imgproxy/imgproxy/v4 4.0.16
- imgproxy imgproxy 4.0.16
Exploit prediction
0.47% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/imgproxy/imgproxy/v3 | >=3.3.0, <4.0.16 >=3.3.0 |
4.0.16 |
| go | github.com/imgproxy/imgproxy | all versions |
no fix listed |
| go | github.com/imgproxy/imgproxy/v2 | all versions |
no fix listed |
| go | github.com/imgproxy/imgproxy/v4 | <4.0.16 |
4.0.16 |
Affected products
- imgproxy imgproxy
Classification
References
-
github.com
/imgproxy/imgproxy/commit/a821b6a4cb07a1bf2bb9077431d1c1e734d79917
web, patch
-
github.com
/imgproxy/imgproxy/security/advisories/GHSA-mmq5-xm89-9pfg
vendor-advisory, web, advisory
-
vulncheck.com
/advisories/imgproxy-3.3.0-before-4.0.16-memory-exhaustion-dos-via-ico-loader
third-party-advisory
-
github.com
/imgproxy/imgproxy
package
-
github.com
/imgproxy/imgproxy/releases/tag/v4.0.16
web
Sources
- CVE List CVE-2026-123616
- GitHub Advisory GHSA-mmq5-xm89-9pfg
- NVD CVE-2026-123616
- OSV GO-2026-6898
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.