CVE-2026-106113 json
ImageSharp: HistogramEqualization uses an unvalidated luminance as an unchecked histogram index
published 2026-10-06 33 d ago modified 2026-10-26 13 d ago also GHSA-j3p4-wp97-rph4 , EUVD-2026-93554
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 33%
- public exploits
- 0
- none known
Summary
ImageSharp is a 2D graphics library. From 2.0.0 until 4.1.2, decoding an attacker-supplied 32-bit floating-point TIFF as Image<HalfVector4> and applying HistogramEqualization can produce a non-finite or out-of-range luminance in ColorNumerics.GetBT709Luminance. GrayscaleLevelsRowOperation.Invoke uses the resulting value as an unchecked histogram offset, causing an unsafe out-of-range access and process termination. Adaptive Histogram Equalization and AutoLevel are not affected by this report. This issue is fixed in version 4.1.2.
Patch / fix
- nuget SixLabors.ImageSharp 3.2.0, 4.1.2
- sixlabors imagesharp 3.2.0, 4.1.2
- github.com/SixLabors/ImageSharp@c4c4bf2 commit
- github.com/SixLabors/ImageSharp@baa37cd commit
- github.com/SixLabors/ImageSharp#3187 pull request
- github.com/SixLabors/ImageSharp#3208 pull request
- github.com/SixLabors/ImageSharp/releases/tag/v4.1.2 release
- github.com/SixLabors/ImageSharp/releases/tag/v3.2.0 release
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 32 d ago
Exploit prediction
0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-j3p4-wp97-rph4 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 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 |
|---|---|---|---|
| nuget | SixLabors.ImageSharp | >=2.0.0, <3.2.0 >=4.0.0, <4.1.2 |
3.2.0 4.1.2 |
Affected products
- SixLabors ImageSharp
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
github.com
/SixLabors/ImageSharp/pull/3187
web, issue-tracking, patch
-
github.com
/SixLabors/ImageSharp/commit/c4c4bf292298c026df470db1a17ff826515fd95d
web, patch
-
github.com
/SixLabors/ImageSharp/pull/3208
web
-
github.com
/SixLabors/ImageSharp/commit/baa37cd19077b2a2a0c5667535111cf31d48c019
web
-
github.com
/SixLabors/ImageSharp/security/advisories/GHSA-j3p4-wp97-rph4
web, exploit, vendor-advisory
-
github.com
/SixLabors/ImageSharp/releases/tag/v4.1.2
web, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-106113
advisory
-
github.com
/SixLabors/ImageSharp
package
-
github.com
/SixLabors/ImageSharp/releases/tag/v3.2.0
web
Sources
- CVE List CVE-2026-106113
- GitHub Advisory GHSA-j3p4-wp97-rph4
- NVD CVE-2026-106113
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