CVE-2026-88350
An integer overflow vulnerability exists in MPack 1.1.1 in mpack_node_cstr_alloc() and...
An integer overflow vulnerability exists in MPack 1.1.1 in mpack_node_cstr_alloc() and mpack_node_utf8_cstr_alloc().
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
An integer overflow vulnerability exists in MPack 1.1.1 in mpack_node_cstr_alloc() and mpack_node_utf8_cstr_alloc().
- Record
CVE-2026-88350- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
EUVDEUVD-2026-84848
An integer overflow vulnerability exists in MPack 1.1.1 in mpack_node_cstr_alloc() and mpack_node_utf8_cstr_alloc().
- Record
EUVD-2026-84848- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-c2wm-8rj3-h9cx
An integer overflow vulnerability exists in MPack 1.1.1 in mpack_node_cstr_alloc() and...
An integer overflow vulnerability exists in MPack 1.1.1 in mpack_node_cstr_alloc() and mpack_node_utf8_cstr_alloc().
- Record
GHSA-c2wm-8rj3-h9cx- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
NVD
An integer overflow vulnerability exists in MPack 1.1.1 in mpack_node_cstr_alloc() and mpack_node_utf8_cstr_alloc().
- Record
CVE-2026-88350- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
OSV
An integer overflow vulnerability exists in MPack 1.1.1 in mpack_node_cstr_alloc() and mpack_node_utf8_cstr_alloc().
- Record
CVE-2026-88350- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-88350
An integer overflow vulnerability exists in MPack 1.1.1 in mpack_node_cstr_alloc() and mpack_node_utf8_cstr_alloc().
- Record
UBUNTU-CVE-2026-88350- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-04
Affected packages
| Package | Affected | Fixed |
|---|---|---|
mpackUbuntu:26.10 | All versions, plus listed versions 1.6-19build1 | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-88350 is a medium vulnerability (CVSS 6.2) in mpack, published September 22, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.12%, the 1st percentile. No source names a fixed version.
References
github.com/ludocode/mpack/issues/124
nvd.nist.gov/vuln/detail/CVE-2026-88350
ubuntu.com/security/CVE-2026-88350
cve.org/CVERecord?id=CVE-2026-88350