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CVE-2026-2889— CCExtractor mp4.c processmp4 use after free

Quick assessment

Affected
n/a CCExtractor
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

CCExtractor是CCExtractor Development开源的一个解压软件。 CCExtractor 0.96.5及之前版本存在资源管理错误漏洞，该漏洞源于函数processmp4存在释放后重用。

CVSS 3.3 · Low EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2026-2889

Vulnerability Information
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Vulnerability Title
CCExtractor mp4.c processmp4 use after free
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was detected in CCExtractor up to 0.96.5. Affected is the function processmp4 in the library src/lib_ccx/mp4.c. Performing a manipulation results in use after free. The attack is only possible with local access. The exploit is now public and may be used. Upgrading to version 0.96.6 is able to address this issue. The patch is named fd7271bae238ccb3ae8a71304ea64f0886324925. You should upgrade the affected component.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
CCExtractor 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CCExtractor是CCExtractor Development开源的一个解压软件。 CCExtractor 0.96.5及之前版本存在资源管理错误漏洞，该漏洞源于函数processmp4存在释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- CCExtractor 0.96.0 -

II. Public POCs for CVE-2026-2889

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III. Intelligence Information for CVE-2026-2889

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Vendor Advisories for CVE-2026-2889 (1)

Same Patch Batch · n/a · 2026-02-21 · 5 CVEs total

CVE-2026-2896 7.3 HIGH funadmin Configuration Ajax.php setConfig improper authorization
CVE-2026-2894 5.3 MEDIUM funadmin forget.html getMember information disclosure
CVE-2026-2861 5.3 MEDIUM Foswiki Changes/Viewfile/Oops information disclosure
CVE-2026-2895 3.7 LOW funadmin Member.php repass password recovery

IV. Related Vulnerabilities

Same product: CCExtractor
Same vendor: n/a
Same weakness: CWE-416

V. Comments for CVE-2026-2889

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