CVE-2026-1418 in GPAC
Summary
by MITRE • 01/26/2026
A security vulnerability has been detected in GPAC up to 2.4.0. This affects the function gf_text_import_srt_bifs of the file src/scene_manager/text_to_bifs.c of the component SRT Subtitle Import. Such manipulation leads to out-of-bounds write. The attack needs to be performed locally. The exploit has been disclosed publicly and may be used. The name of the patch is 10c73b82cf0e367383d091db38566a0e4fe71772. It is best practice to apply a patch to resolve this issue.
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Analysis
by VulDB Data Team • 01/29/2026
The vulnerability identified as CVE-2026-1418 represents a critical out-of-bounds write flaw within the GPAC media framework version 2.4.0 and earlier. This security weakness resides in the text_to_bifs.c source file, specifically within the gf_text_import_srt_bifs function that handles SRT subtitle import operations. The flaw manifests when processing malformed SRT subtitle files, creating conditions where the application writes data beyond the allocated memory boundaries. Such memory corruption vulnerabilities are particularly dangerous as they can lead to arbitrary code execution or system instability, making them attractive targets for attackers seeking to compromise systems running vulnerable GPAC versions.
The technical nature of this vulnerability places it squarely within the CWE-787 category of out-of-bounds write conditions, which are classified as severe memory safety issues in the Common Weakness Enumeration framework. The attack vector requires local execution, meaning an attacker must already have access to the system to exploit this weakness, though this limitation does not diminish its potential impact. The publicly disclosed exploit demonstrates that threat actors have already developed working tools to leverage this vulnerability, increasing the risk to systems that have not yet been patched. The patch identifier 10c73b82cf0e367383d091db38566a0e4fe71772 provides a specific reference point for remediation efforts, indicating that the developers have identified and implemented a fix for this memory corruption issue.
The operational impact of CVE-2026-1418 extends beyond simple system crashes or instability, as it creates potential entry points for more sophisticated attacks. When an application fails to properly validate input data before processing, attackers can manipulate the input to trigger memory corruption that may result in privilege escalation or complete system compromise. In the context of media processing frameworks like GPAC, which are often used in multimedia applications, streaming services, and content management systems, this vulnerability could be exploited to gain unauthorized access to systems processing SRT subtitle files. The vulnerability's presence in the subtitle import functionality suggests that any application relying on GPAC for media processing could be at risk, particularly those handling untrusted input from users or third-party sources.
Security practitioners should prioritize immediate patch deployment for systems running GPAC versions up to 2.4.0, as the public disclosure of exploit code significantly increases the threat surface. The remediation process should include comprehensive testing to ensure that the patch does not introduce compatibility issues with existing workflows or media processing operations. Organizations should also implement additional monitoring and input validation measures to detect potential exploitation attempts, as the local attack requirement does not eliminate the possibility of privilege escalation through other attack vectors. The vulnerability's classification under ATT&CK technique T1059.007 for command and scripting interpreter indicates that exploitation could potentially involve executing malicious commands through compromised media processing pipelines, making proper system hardening and access controls essential for comprehensive defense.