CVE-2026-77113

Path Traversal Vulnerability in apport-unpack

6.7 MediumPublic exploitFix available

Path traversal in apport-unpack in Canonical Apport before 2.36.0, 2.34.2, and 2.28.4 on Linux allows an attacker to create or overwrite arbitrary files with the privileges of the executing user via an attacker controlled key names in crash report files.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Active

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: None

Exploit likelihood

0.20%Unchanged since Aug 21, 2026

What each source reports

CVE List Score used 6.7

Path Traversal Vulnerability in apport-unpack

Record: CVE-2026-77113
CVSS 4.0: 6.7 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Weakness: CWE-23
Updated: 2026-11-02

EUVDEUVD-2026-63758 6.7

Record: EUVD-2026-63758
CVSS 4.0: 6.7 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-m4rr-rf2f-g267 6.7

Path traversal in apport-unpack in Canonical Apport before 2.36.0, 2.34.2, and 2.28.4 on Linux...

Record: GHSA-m4rr-rf2f-g267
CVSS 4.0: 6.7 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness: CWE-23
Updated: 2026-11-02

NVD 6.7

Record: CVE-2026-77113
CVSS 4.0: 6.7 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness: CWE-23
Updated: 2026-11-02

OSV 6.7

Path Traversal Vulnerability in apport-unpack

Record: CVE-2026-77113
CVSS 4.0: 6.7 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Weakness: CWE-23
Updated: 2026-11-02

OSVCLSA-2026-1792507532 No score

Fix CVE(s): CVE-2026-77113

CVE-2026-77113: path traversal via key names in ProblemReport.load()

Record: CLSA-2026-1792507532
Updated: 2026-11-02

Affected products

canonical apport

Affected packages

Affected packages
Package	Affected	Fixed
`apport` TuxCare:Ubuntu:18.04	before 2.20.9-0ubuntu7.29+tuxcare.els1	2.20.9-0ubuntu7.29+tuxcare.els1
`apport-gtk` TuxCare:Ubuntu:18.04	before 2.20.9-0ubuntu7.29+tuxcare.els1	2.20.9-0ubuntu7.29+tuxcare.els1
`apport-kde` TuxCare:Ubuntu:18.04	before 2.20.9-0ubuntu7.29+tuxcare.els1	2.20.9-0ubuntu7.29+tuxcare.els1
`apport-noui` TuxCare:Ubuntu:18.04	before 2.20.9-0ubuntu7.29+tuxcare.els1	2.20.9-0ubuntu7.29+tuxcare.els1
`apport-retrace` TuxCare:Ubuntu:18.04	before 2.20.9-0ubuntu7.29+tuxcare.els1	2.20.9-0ubuntu7.29+tuxcare.els1
`apport-valgrind` TuxCare:Ubuntu:18.04	before 2.20.9-0ubuntu7.29+tuxcare.els1	2.20.9-0ubuntu7.29+tuxcare.els1
`dh-apport` TuxCare:Ubuntu:18.04	before 2.20.9-0ubuntu7.29+tuxcare.els1	2.20.9-0ubuntu7.29+tuxcare.els1
`python-apport` TuxCare:Ubuntu:18.04	before 2.20.9-0ubuntu7.29+tuxcare.els1	2.20.9-0ubuntu7.29+tuxcare.els1
`python-problem-report` TuxCare:Ubuntu:18.04	before 2.20.9-0ubuntu7.29+tuxcare.els1	2.20.9-0ubuntu7.29+tuxcare.els1
`python3-apport` TuxCare:Ubuntu:18.04	before 2.20.9-0ubuntu7.29+tuxcare.els1	2.20.9-0ubuntu7.29+tuxcare.els1
`python3-problem-report` TuxCare:Ubuntu:18.04	before 2.20.9-0ubuntu7.29+tuxcare.els1	2.20.9-0ubuntu7.29+tuxcare.els1

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
PoC in GitHub	0xROI/CVE-2026-77113	2026-08-18

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-77113 is a medium vulnerability (CVSS 6.7) in Canonical Apport, published August 20, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.20%, the 9th percentile. Fixed in apport 2.20.9-0ubuntu7.29+tuxcare.els1.