---
title: "CVE-2026-2889\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2026-2889?format=md
keywords: index, follow
---

# CVE-2026-2889

Publication date 21 February 2026

Last updated 11 September 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**3.3 · Low**

[Score breakdown](https://ubuntu.com/security/CVE-2026-2889?format=md#impact-score)

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## 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.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| ccextractor | 26.04 LTS resolute | Not in release |
| 25.10 questing | Not in release |
| 24.04 LTS noble | Needs evaluation |
| 22.04 LTS jammy | Needs evaluation |
| 20.04 LTS focal | Needs evaluation |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:

CVSS v4.0

[CVSS v4.0](https://ubuntu.com/security/CVE-2026-2889?format=md)
[CVSS v3.0](https://ubuntu.com/security/CVE-2026-2889?format=md)

**Base score**

1.9 · Low

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Local |
  | Attack complexity | Low |
  | Attack requirements | None |
  | Privileges required | Low |
  | User interaction | None |
  | Vulnerable system - Confidentiality impact | None |
  | Vulnerable system - Integrity impact | None |
  | Vulnerable system - Availability impact | Low |
  | Subsequent system - Confidentiality impact | None |
  | Subsequent system - Integrity impact | None |
  | Subsequent system - Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 1.9 · Low |
  | Base + Threat score | - |
  | Base + Environmental score | - |
  | Base + Threat + Environmental score | - |

**Vector:** CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2889)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-2889)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-2889)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-2889)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2026-2889>
* <https://github.com/CCExtractor/ccextractor/issues/2055>
* <https://github.com/CCExtractor/ccextractor/pull/2057>
* <https://github.com/CCExtractor/ccextractor/>
* <https://github.com/CCExtractor/ccextractor/commit/fd7271bae238ccb3ae8a71304ea64f0886324925>
* <https://github.com/CCExtractor/ccextractor/releases/tag/v0.96.6>
* <https://github.com/oneafter/0123/blob/main/cc3/repro>
* <https://vuldb.com/?ctiid.347182>
* <https://vuldb.com/?id.347182>
* <https://vuldb.com/?submit.755029>