GHSA-qvxh-prvr-85w2 CVE-2026-61861
ImageMagick: Use-After-Free in FormatMagickCaption when memory allocation fails
Medium
NuGet
- Severity
- 6.3 / 10
- Medium · CVSS 4.0
- Exploit chance (EPSS)
- 0.55%
- Chance of exploitation in the next 30 days. Higher than 46.28% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-416 Use After Free
- Fix
- Available
- 17 packages have a fixed version
Description
When a memory allocation fails inside the FormatMagickCaption method a dangling pointer still points to the freed memory.
Affected versions
NuGet
| Package | Vulnerable | Fixed in |
|---|---|---|
| Magick.NET-Q16-AnyCPU | < 14.15.0 |
14.15.0 |
| Magick.NET-Q16-HDRI-AnyCPU | < 14.15.0 |
14.15.0 |
| Magick.NET-Q16-HDRI-OpenMP-arm64 | < 14.15.0 |
14.15.0 |
| Magick.NET-Q16-HDRI-arm64 | < 14.15.0 |
14.15.0 |
| Magick.NET-Q16-HDRI-x64 | < 14.15.0 |
14.15.0 |
| Magick.NET-Q16-HDRI-x86 | < 14.15.0 |
14.15.0 |
| Magick.NET-Q16-OpenMP-arm64 | < 14.15.0 |
14.15.0 |
| Magick.NET-Q16-OpenMP-x64 | < 14.15.0 |
14.15.0 |
| Magick.NET-Q16-arm64 | < 14.15.0 |
14.15.0 |
| Magick.NET-Q16-x64 | < 14.15.0 |
14.15.0 |
| Magick.NET-Q16-x86 | < 14.15.0 |
14.15.0 |
| Magick.NET-Q8-AnyCPU | < 14.15.0 |
14.15.0 |
| Magick.NET-Q8-OpenMP-arm64 | < 14.15.0 |
14.15.0 |
| Magick.NET-Q8-OpenMP-x64 | < 14.15.0 |
14.15.0 |
| Magick.NET-Q8-arm64 | < 14.15.0 |
14.15.0 |
| Magick.NET-Q8-x64 | < 14.15.0 |
14.15.0 |
| Magick.NET-Q8-x86 | < 14.15.0 |
14.15.0 |
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 → 14.15.0
- dotnet
dotnet add package Magick.NET-Q16-AnyCPU --version 14.15.0
Magick.NET-Q16-HDRI-AnyCPU NuGet → 14.15.0
- dotnet
dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.15.0
Magick.NET-Q16-HDRI-OpenMP-arm64 NuGet → 14.15.0
- dotnet
dotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.15.0
Magick.NET-Q16-HDRI-arm64 NuGet → 14.15.0
- dotnet
dotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.15.0
Magick.NET-Q16-HDRI-x64 NuGet → 14.15.0
- dotnet
dotnet add package Magick.NET-Q16-HDRI-x64 --version 14.15.0
Magick.NET-Q16-HDRI-x86 NuGet → 14.15.0
- dotnet
dotnet add package Magick.NET-Q16-HDRI-x86 --version 14.15.0
Magick.NET-Q16-OpenMP-arm64 NuGet → 14.15.0
- dotnet
dotnet add package Magick.NET-Q16-OpenMP-arm64 --version 14.15.0
Magick.NET-Q16-OpenMP-x64 NuGet → 14.15.0
- dotnet
dotnet add package Magick.NET-Q16-OpenMP-x64 --version 14.15.0
Magick.NET-Q16-arm64 NuGet → 14.15.0
- dotnet
dotnet add package Magick.NET-Q16-arm64 --version 14.15.0
Magick.NET-Q16-x64 NuGet → 14.15.0
- dotnet
dotnet add package Magick.NET-Q16-x64 --version 14.15.0
Magick.NET-Q16-x86 NuGet → 14.15.0
- dotnet
dotnet add package Magick.NET-Q16-x86 --version 14.15.0
Magick.NET-Q8-AnyCPU NuGet → 14.15.0
- dotnet
dotnet add package Magick.NET-Q8-AnyCPU --version 14.15.0
Magick.NET-Q8-OpenMP-arm64 NuGet → 14.15.0
- dotnet
dotnet add package Magick.NET-Q8-OpenMP-arm64 --version 14.15.0
Magick.NET-Q8-OpenMP-x64 NuGet → 14.15.0
- dotnet
dotnet add package Magick.NET-Q8-OpenMP-x64 --version 14.15.0
Magick.NET-Q8-arm64 NuGet → 14.15.0
- dotnet
dotnet add package Magick.NET-Q8-arm64 --version 14.15.0
Magick.NET-Q8-x64 NuGet → 14.15.0
- dotnet
dotnet add package Magick.NET-Q8-x64 --version 14.15.0
Magick.NET-Q8-x86 NuGet → 14.15.0
- dotnet
dotnet add package Magick.NET-Q8-x86 --version 14.15.0
Severity breakdown
CVSS 4.0 6.3
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/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
- Attack vector
- Network
- Attack complexity
- High
- Attack requirements
- Present
- Privileges required
- None
- User interaction
- None
- Confidentiality (vulnerable system)
- None
- Integrity (vulnerable system)
- None
- Availability (vulnerable system)
- Low
- Confidentiality (subsequent systems)
- None
- Integrity (subsequent systems)
- None
- Availability (subsequent systems)
- None
- Exploit maturity
- Not defined
- Scope
- X
CVSS 3.1 3.7
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Weakness
CWE-416: Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
How to prevent it
- Architecture and Design: Choose a language that provides automatic memory management.
- Implementation: When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.
References
Packages
Other links
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 |
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