Is CVE-2026-77113 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-77113 being exploited in the wild.

How severe is CVE-2026-77113?

Informational severity, with a CVSS score of 0, published 20 August 2026.

Which products and versions are affected?

Canonical Apport before 2.36.0, 2.34.2, and 2.28.4.

Is there a fix for CVE-2026-77113?

A patch was published on 2026-08-20: Patch merged in GitHub PR #646 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-77113 attacked?

It is attacked with local access, in a software library.

Am I affected by CVE-2026-77113?

Check whether you run Canonical Apport at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-77113: Canonical Apport path traversal in apport-unpack

CVE-2026-77113 · Severity: info · CVSS 0 · Published 2026-08-20

Apport is a system tool used by Linux distributions to collect and process diagnostic crash reports. A path traversal vulnerability in apport-unpack allows an attacker to create or overwrite arbitrary files outside the intended extraction directory when processing a malicious crash report file. An attacker could modify configuration files like .bashrc or .profile to execute arbitrary code when the affected user logs in.

Technologies: Canonical Apport. Vendors: Canonical.

Quick answers

Is CVE-2026-77113 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-77113 being exploited in the wild.
How severe is CVE-2026-77113?: Informational severity, with a CVSS score of 0, published 20 August 2026.
Which products and versions are affected?: Canonical Apport before 2.36.0, 2.34.2, and 2.28.4.
Is there a fix for CVE-2026-77113?: A patch was published on 2026-08-20: Patch merged in GitHub PR #646 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-77113 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-77113?: Check whether you run Canonical Apport at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a path traversal flaw in the apport-unpack utility and ProblemReport.load() function. The root cause is that crash report files are parsed to extract key/value pairs, and keys (which should be restricted to alphanumeric characters, dots, underscores, and hyphens) are not validated when loading reports from disk—only when programmatically assigned via __setitem__(). As a result, malicious keys containing path separators (e.g., "../escaped" or absolute paths) are written directly to disk using os.path.join(target_directory, key) without constraints, allowing traversal outside the destination directory. The vulnerability can be exploited by supplying a crafted apport report file with traversal sequences in key names; no authentication is required. An attacker can create or overwrite arbitrary files with the privileges of the user running apport-unpack, potentially leading to code execution through modification of startup scripts or configuration files. Patches are available in Apport 2.36.0, 2.34.2, and 2.28.4.

Affected products

Canonical Apport before 2.36.0, 2.34.2, and 2.28.4

Timeline

2026-08-20: disclosed
2026-08-20: patched: Patch merged in GitHub PR #646

References

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