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Fencer Vulns
high 7.1

CVE-2024-27929 json

Use After Free in SixLabors.ImageSharp

published 2024-03-05 2 y ago modified 2026-09-10 1 mo ago also EUVD-2024-0840 , GHSA-65x7-c272-7g7r

cvss
7.1
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 29%
public exploits
0
none known

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.

Patch / fix

  • nuget SixLabors.ImageSharp 2.1.7, 3.1.3
  • sixlabors imagesharp 2.1.7, 3.1.3

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-65x7-c272-7g7r referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
GitHub 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
NVD 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Affected packages

ecosystem package affected fixed in
nuget SixLabors.ImageSharp
>=3.0.0, <3.1.3
<2.1.7
3.1.3
2.1.7

Affected products

  • SixLabors ImageSharp

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.