GHSA-wj8w-pjxf-9g4f CVE-2026-28691
ImageMagick has uninitialized pointer dereference in JBIG decoder
High
NuGet
- Severity
- 7.5 / 10
- High · CVSS 3.1
- Exploit chance (EPSS)
- 0.37%
- Chance of exploitation in the next 30 days. Higher than 30.60% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-252 Unchecked Return Value
- Fix
- Available
- 19 packages have a fixed version
Description
An uninitialized pointer dereference vulnerability exists in the JBIG decoder due to a missing check.
Affected versions
NuGet
| Package | Vulnerable | Fixed in |
|---|---|---|
| Magick.NET-Q16-AnyCPU | < 14.10.4 |
14.10.4 |
| Magick.NET-Q16-HDRI-AnyCPU | < 14.10.4 |
14.10.4 |
| Magick.NET-Q16-HDRI-OpenMP-arm64 | < 14.10.4 |
14.10.4 |
| Magick.NET-Q16-HDRI-OpenMP-x64 | < 14.10.4 |
14.10.4 |
| Magick.NET-Q16-HDRI-arm64 | < 14.10.4 |
14.10.4 |
| Magick.NET-Q16-HDRI-x64 | < 14.10.4 |
14.10.4 |
| Magick.NET-Q16-HDRI-x86 | < 14.10.4 |
14.10.4 |
| Magick.NET-Q16-OpenMP-arm64 | < 14.10.4 |
14.10.4 |
| Magick.NET-Q16-OpenMP-x64 | < 14.10.4 |
14.10.4 |
| Magick.NET-Q16-OpenMP-x86 | < 14.10.4 |
14.10.4 |
| Magick.NET-Q16-arm64 | < 14.10.4 |
14.10.4 |
| Magick.NET-Q16-x64 | < 14.10.4 |
14.10.4 |
| Magick.NET-Q16-x86 | < 14.10.4 |
14.10.4 |
| Magick.NET-Q8-AnyCPU | < 14.10.4 |
14.10.4 |
| Magick.NET-Q8-OpenMP-arm64 | < 14.10.4 |
14.10.4 |
| Magick.NET-Q8-OpenMP-x64 | < 14.10.4 |
14.10.4 |
| Magick.NET-Q8-arm64 | < 14.10.4 |
14.10.4 |
| Magick.NET-Q8-x64 | < 14.10.4 |
14.10.4 |
| Magick.NET-Q8-x86 | < 14.10.4 |
14.10.4 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
Magick.NET-Q16-AnyCPU NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q16-AnyCPU --version 14.10.4
Magick.NET-Q16-HDRI-AnyCPU NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.10.4
Magick.NET-Q16-HDRI-OpenMP-arm64 NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.10.4
Magick.NET-Q16-HDRI-OpenMP-x64 NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q16-HDRI-OpenMP-x64 --version 14.10.4
Magick.NET-Q16-HDRI-arm64 NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.10.4
Magick.NET-Q16-HDRI-x64 NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q16-HDRI-x64 --version 14.10.4
Magick.NET-Q16-HDRI-x86 NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q16-HDRI-x86 --version 14.10.4
Magick.NET-Q16-OpenMP-arm64 NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q16-OpenMP-arm64 --version 14.10.4
Magick.NET-Q16-OpenMP-x64 NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q16-OpenMP-x64 --version 14.10.4
Magick.NET-Q16-OpenMP-x86 NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q16-OpenMP-x86 --version 14.10.4
Magick.NET-Q16-arm64 NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q16-arm64 --version 14.10.4
Magick.NET-Q16-x64 NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q16-x64 --version 14.10.4
Magick.NET-Q16-x86 NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q16-x86 --version 14.10.4
Magick.NET-Q8-AnyCPU NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q8-AnyCPU --version 14.10.4
Magick.NET-Q8-OpenMP-arm64 NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q8-OpenMP-arm64 --version 14.10.4
Magick.NET-Q8-OpenMP-x64 NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q8-OpenMP-x64 --version 14.10.4
Magick.NET-Q8-arm64 NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q8-arm64 --version 14.10.4
Magick.NET-Q8-x64 NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q8-x64 --version 14.10.4
Magick.NET-Q8-x86 NuGet → 14.10.4
- dotnet
dotnet add package Magick.NET-Q8-x86 --version 14.10.4
Severity breakdown
CVSS 3.1 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Weakness
CWE-252: Unchecked Return Value
The product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions.
How to prevent it
- Implementation: Check the results of all functions that return a value and verify that the value is expected.
- Implementation: For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].
- Implementation: Ensure that you account for all possible return values from the function.
- Implementation: When designing a function, make sure you return a value or throw an exception in case of an error.
References
Advisories
Packages
Other links
- github.com/ImageMagick/ImageMagick/security/advisories/GHSA-wj8w-pjxf-9g4f
- github.com/dlemstra/Magick.NET/releases/tag/14.10.4
- access.redhat.com/errata/RHSA-2026:6713
- access.redhat.com/security/cve/CVE-2026-28691
- bugzilla.redhat.com/show_bug.cgi
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28691.json
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-j7hp-h8jx-5ppr libwebp: OOB write in BuildHuffmanTable | High Known exploited | Also affects magick.net-q16-anycpu |
| GHSA-cvhv-g4rq-3hmw ImageMagick: Memory Leak when providing invalid options to the cli | Medium | Also affects Magick.NET-Q16-AnyCPU |
| GHSA-h22j-f9xw-xjjm ImageMagick: Integer Overflow in JNX decoder causes heap buffer over-write when processing extremly large files on 32-bit builds | Medium | Also affects Magick.NET-Q16-AnyCPU |
| GHSA-422r-8c97-xcg4 ImageMagick: Heap Buffer Over-Write in fx operation | Medium | Also affects Magick.NET-Q16-AnyCPU |
| GHSA-f5m7-cqgw-8hm7 ImageMagick: Heap Buffer Over-Write in morphology operation when an invalid kernel is provided | Medium | Also affects Magick.NET-Q16-AnyCPU |
| GHSA-hc76-7mpc-qjqh ImageMagick: Code injection in HTML encoder due to incomplete fix of CVE-2026-25797 | Medium | Also affects Magick.NET-Q16-AnyCPU |
| GHSA-56m6-8q75-f2rw ImageMagick: Policy Bypass due to an incomplete fix of CVE-2026-49219 | Medium | Also affects Magick.NET-Q16-AnyCPU |
| GHSA-h5r4-w88w-7ccr ImageMagick: Memory Leak in TIFF encoder when invalid tiff:tile-geometry is specified | Low | Also affects Magick.NET-Q16-AnyCPU |
MergeHarbor checks every repository's dependencies against this database, ranks what matters by exploitability and reachability, routes it to the owning team and opens the fix pull request.
Check your repos with MergeHarbor