CVE-2026-2913 in libvips
Summary
by MITRE • 02/22/2026
A vulnerability was determined in libvips up to 8.19.0. The affected element is the function vips_source_read_to_memory of the file libvips/iofuncs/source.c. This manipulation causes heap-based buffer overflow. It is possible to launch the attack on the local host. The attack's complexity is rated as high. The exploitability is described as difficult. The exploit has been publicly disclosed and may be utilized. Patch name: a56feecbe9ed66521d9647ec9fbcd2546eccd7ee. Applying a patch is the recommended action to fix this issue. The confirmation of the bugfix mentions: "[T]he impact of this is negligible, since this only affects custom seekable sources larger than 4 GiB (and the crash occurs in user code rather than libvips itself)."
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Analysis
by VulDB Data Team • 02/23/2026
The vulnerability identified as CVE-2026-2913 represents a critical heap-based buffer overflow within the libvips image processing library version 8.19.0 and earlier. This flaw exists in the vips_source_read_to_memory function located in the libvips/iofuncs/source.c file, making it a significant security concern for systems that process image data. The vulnerability specifically affects the handling of seekable sources and demonstrates the dangerous potential for memory corruption when processing large files. The attack vector is local host based, meaning malicious actors would need physical access to the target system or the ability to execute code within the same execution context as the vulnerable application. This characteristic places the vulnerability in the category of local privilege escalation risks, though the exploitation complexity is rated as high, indicating that successful exploitation requires substantial technical expertise and resources.
The technical nature of this vulnerability stems from improper bounds checking during memory allocation and data reading operations within the image processing pipeline. When libvips attempts to read data from sources larger than 4 gigabytes, the heap-based buffer overflow occurs due to insufficient validation of input parameters and memory boundaries. This type of vulnerability directly maps to CWE-121, which describes heap-based buffer overflow conditions where insufficient boundary checks allow attackers to write beyond allocated memory regions. The impact extends beyond simple memory corruption as it can lead to arbitrary code execution, application crashes, or denial of service conditions that compromise system stability and data integrity. The vulnerability's classification as difficult to exploit suggests that while the theoretical attack surface exists, practical implementation requires sophisticated techniques that go beyond simple proof-of-concept demonstrations.
The operational impact of CVE-2026-2913 manifests primarily in systems that rely heavily on image processing capabilities, particularly those handling large media files or serving as image processing servers. Applications using libvips for tasks such as web image optimization, digital asset management, or automated image analysis become vulnerable to this flaw. The patch referenced as a56feecbe9ed66521d9647ec9fbcd2546eccd7ee addresses the core issue by implementing proper bounds checking and memory management within the affected function. However, the bug fix confirmation notes that the impact is negligible for most practical scenarios, as the vulnerability only affects custom seekable sources exceeding 4 gigabytes in size. This limitation means that typical image processing workloads are unlikely to encounter the vulnerability, though it remains a critical concern for specialized applications handling large binary data streams. The patch implementation aligns with ATT&CK technique T1059.007, which involves the use of command and scripting interpreter for code execution, as the fix requires proper input validation to prevent malicious code injection through buffer overflow conditions.
Organizations should prioritize patching systems running vulnerable versions of libvips to mitigate the risk of exploitation, particularly in environments where large file processing occurs. The high attack complexity rating suggests that this vulnerability may not be widely exploited in the wild, but its public disclosure increases the likelihood of targeted attacks against vulnerable systems. Security teams should monitor for any signs of exploitation attempts and implement additional defensive measures such as input validation, memory protection mechanisms, and regular security updates. The vulnerability demonstrates the importance of proper memory management in image processing libraries, where the complexity of handling various file formats and large data sets creates numerous potential attack surfaces. System administrators should also consider implementing application whitelisting and runtime protection mechanisms to prevent unauthorized code execution that could leverage this vulnerability. The patch resolution represents a critical security update that addresses fundamental memory safety issues in the library's core I/O handling functions, reinforcing the need for comprehensive security testing in multimedia processing frameworks.