Memory Allocation with Excessive Size Value in SixLabors.ImageSharp
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-789.
Summary
ImageSharp is a 2D graphics API. A vulnerability discovered in the ImageSharp library, where the processing of specially crafted files can lead to excessive memory usage in image decoders. The vulnerability is triggered when ImageSharp attempts to process image files that are designed to exploit this flaw. This flaw can be exploited to cause a denial of service (DoS) by depleting process memory, thereby affecting applications and services that rely on ImageSharp for image processing tasks. Users and administrators are advised to update to the latest version of ImageSharp that addresses this vulnerability to mitigate the risk of exploitation. The problem has been patched in v3.1.4 and v2.1.8.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| SixLabors | ImageSharp | before 2.1.8; 3.0.0 to before 3.1.4 | 2.1.8, 3.1.4 | Patch available | CNA |
| — | SixLabors.ImageSharp (NuGet) | before 2.1.8 | 2.1.8 | Patch available | GHSA-g85r-6x2q-45w7 |
| — | SixLabors.ImageSharp (NuGet) | 3.0.0 to before 3.1.4 | 3.1.4 | Patch available | GHSA-g85r-6x2q-45w7 |
- ImageSharp VendorSixLabors Affected before 2.1.8; 3.0.0 to before 3.1.4 Fixed in 2.1.8, 3.1.4 Patch available CNA
- SixLabors.ImageSharp (NuGet) Vendor— Affected before 2.1.8 Fixed in 2.1.8 Patch available GHSA-g85r-6x2q-45w7
- SixLabors.ImageSharp (NuGet) Vendor— Affected 3.0.0 to before 3.1.4 Fixed in 3.1.4 Patch available GHSA-g85r-6x2q-45w7
Remediation
- Fix · CNA ImageSharp (SixLabors) Fixed in 2.1.8, 3.1.4
- Fix · GHSA-g85r-6x2q-45w7 SixLabors.ImageSharp (NuGet) Fixed in 2.1.8 Advisory →
- Fix · GHSA-g85r-6x2q-45w7 SixLabors.ImageSharp (NuGet) Fixed in 3.1.4 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2024-32035
- 2026-10-03 Alias added: GHSA-g85r-6x2q-45w7
- 2026-10-28 EPSS moved to the 50th–90th percentile
References
Patch 2
Advisory 2
More SixLabors Imagesharp vulnerabilities
- TI-2026-68636 Out-of-bounds write in ImageSharp CCITT fax decompression CVSS 3.1HIGH 7.5
- TI-2026-68634 Out-of-bounds write in ImageSharp TIFF CCITT Group 4 encoder CVSS 3.1HIGH 7.5
- TI-2026-68629 Out-of-bounds write in ImageSharp TIFF CCITT encoder CVSS 3.1HIGH 7.5
- TI-2025-20408 Out-of-bounds Write in SixLabors ImageSharp CVSS 3.1HIGH 7.5
- TI-2026-68635 ImageSharp BigTIFF IFD count can keep a decoder thread in a non-progressing loop CVSS 3.1MEDIUM 5.3
- TI-2026-68633 Excessive memory allocation in ImageSharp ICC CLUT parsing CVSS 3.1MEDIUM 5.3
Sources
- CVE-2024-32035 · CVE Program
- CVE-2024-32035 · NVD
- FIRST EPSS
- GHSA-g85r-6x2q-45w7 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences