CVE-2026-114112: Heap-based Buffer Overflow in lovell sharp
Description
CVE-2026-114112 is a heap-based buffer overflow vulnerability in the sharp image processing library before version 0.35.4. It arises from a vulnerable bundled libheif dependency that processes AVIF/HEIF images. An attacker can supply crafted malicious images to trigger this flaw, potentially leading to remote code execution on glibc-based Linux systems.
CVSS v4.0
Score 8.9high
Affected software
lovell
sharp
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The sharp library versions prior to 0.35.4 include a vulnerable version of libheif, which contains a heap-based buffer overflow vulnerability. This flaw can be exploited by submitting specially crafted AVIF or HEIF images to applications using sharp for image processing. Successful exploitation may result in remote code execution on systems running glibc-based Linux distributions. The vulnerability has a CVSS 4.0 score of 8.9, indicating high severity. The vendor has released a patch in version 0.35.4 to address this issue.
Potential Impact
Exploitation of this vulnerability allows an attacker to execute arbitrary code remotely on affected systems by processing malicious AVIF/HEIF images. This can lead to full system compromise on glibc-based Linux environments where vulnerable versions of sharp are used to handle untrusted image inputs.
Mitigation Recommendations
A patch is available in sharp version 0.35.4. Users should upgrade to version 0.35.4 or later to remediate this vulnerability. Since sharp is a cloud service, the vendor manages remediation for the cloud-hosted service; users should verify with the vendor that their environment is updated accordingly.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-20T21:48:58.503Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Is Cloud Service
- true
Threat ID: 6ad80c0a2cdf04f6568caa63
Added to database: 10/21/2026, 00:49:14 UTC
Last enriched: 10/21/2026, 01:03:29 UTC
Last updated: 10/21/2026, 01:08:22 UTC
Views: 5
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