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TI-2024-18532 Aliases CVE-2024-27929GHSA-65x7-c272-7g7r

Use After Free in SixLabors.ImageSharp

Priority LOW 31CWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

ImageSharp is a managed, cross-platform, 2D graphics library. A heap-use-after-free flaw was found in ImageSharp's InitializeImage() function of PngDecoderCore.cs file. This vulnerability is triggered when an attacker passes a specially crafted PNG image file to ImageSharp for conversion, potentially leading to information disclosure. This issue has been patched in versions 3.1.3 and 2.1.7.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00353 29th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed ImageSharp (SixLabors): 3.1.3, 2.1.7SixLabors.ImageSharp (NuGet): 3.1.3, 2.1.7

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

VendorProductAffected versionsFixed inStatusSource
SixLaborsImageSharp3.0.0 to before 3.1.3; before 2.1.73.1.3, 2.1.7Patch availableCNA
—SixLabors.ImageSharp (NuGet)3.0.0 to before 3.1.33.1.3Patch availableGHSA-65x7-c272-7g7r
—SixLabors.ImageSharp (NuGet)before 2.1.72.1.7Patch availableGHSA-65x7-c272-7g7r
  • ImageSharp VendorSixLabors Affected 3.0.0 to before 3.1.3; before 2.1.7 Fixed in 3.1.3, 2.1.7 Patch available CNA
  • SixLabors.ImageSharp (NuGet) Vendor— Affected 3.0.0 to before 3.1.3 Fixed in 3.1.3 Patch available GHSA-65x7-c272-7g7r
  • SixLabors.ImageSharp (NuGet) Vendor— Affected before 2.1.7 Fixed in 2.1.7 Patch available GHSA-65x7-c272-7g7r

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:sixlabors:imagesharp:*:*:*:*:*:*:*:*before 2.1.7; 3.1.0 to before 3.1.3VulnerableSixLabors
  • cpe:2.3:a:sixlabors:imagesharp:*:*:*:*:*:*:*:* Versions before 2.1.7; 3.1.0 to before 3.1.3 Vulnerable ·SixLabors

Remediation

  • Fix · CNA ImageSharp (SixLabors) Fixed in 3.1.3, 2.1.7
  • Fix · GHSA-65x7-c272-7g7r SixLabors.ImageSharp (NuGet) Fixed in 3.1.3 Advisory →
  • Fix · GHSA-65x7-c272-7g7r SixLabors.ImageSharp (NuGet) Fixed in 2.1.7 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-27929
  2. 2026-10-03 Alias added: GHSA-65x7-c272-7g7r

References

Exploit 1

Advisory 1

Other 2

  • 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
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences