CVE-2023-22899

Zip4j Origin Validation Error

5.9 MediumFix available

Zip4j through 2.11.2, as used in Threema and other products, does not always check the MAC when decrypting a ZIP archive.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: None

Exploit likelihood

0.64%Down 0.3 points since Jan 10, 2023

What each source reports

NVD Score used 5.9

Zip4j through 2.11.2, as used in Threema and other products, does not always check the MAC when decrypting a ZIP archive.

Record: CVE-2023-22899
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-346
Updated: 2026-11-02

CVE List 5.9

Zip4j through 2.11.2, as used in Threema and other products, does not always check the MAC when decrypting a ZIP archive.

Record: CVE-2023-22899
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-346
Updated: 2026-11-02

EUVDEUVD-2023-0309 5.9

Zip4j through 2.11.2, as used in Threema and other products, does not always check the MAC when decrypting a ZIP archive.

Record: EUVD-2023-0309
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-2pj2-gchf-wmw7 5.9

Zip4j Origin Validation Error

Zip4j through 2.11.2, as used in Threema and other products, does not always check the MAC when decrypting a ZIP archive. This issue has been fixed in version 2.11.3.

Record: GHSA-2pj2-gchf-wmw7
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-346
Updated: 2026-11-02

OSV 5.9

Zip4j through 2.11.2, as used in Threema and other products, does not always check the MAC when decrypting a ZIP archive.

Record: CVE-2023-22899
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-02

OSVDEBIAN-CVE-2023-22899 5.9

Zip4j through 2.11.2, as used in Threema and other products, does not always check the MAC when decrypting a ZIP archive.

Record: DEBIAN-CVE-2023-22899
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-02

OSVGHSA-2pj2-gchf-wmw7 5.9

Zip4j Origin Validation Error

Zip4j through 2.11.2, as used in Threema and other products, does not always check the MAC when decrypting a ZIP archive. This issue has been fixed in version 2.11.3.

Record: GHSA-2pj2-gchf-wmw7
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-346
Updated: 2026-11-02

OSVUBUNTU-CVE-2023-22899 5.9

Zip4j through 2.11.2, as used in Threema and other products, does not always check the MAC when decrypting a ZIP archive.

Record: UBUNTU-CVE-2023-22899
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-02

Affected products

zip4j project zip4j

Affected packages

Affected packages
Package	Affected	Fixed
`net.lingala.zip4j:zip4j` Maven	through 2.11.2	2.11.3
`zip4j` Debian:12	before 2.11.2-3	2.11.2-3
`zip4j` Debian:13	before 2.11.2-3	2.11.2-3
`zip4j` Debian:14	before 2.11.2-3	2.11.2-3
`net.lingala.zip4j:zip4j` Maven	before 2.11.3, plus listed versions 1.2.31.2.41.2.51.2.61.2.7 Show 43 moreShow less 1.2.81.2.91.3.11.3.21.3.32.02.0.12.0.22.0.32.1.02.1.12.1.22.1.32.1.42.10.02.11.02.11.12.11.22.2.02.2.12.2.22.2.32.2.42.2.52.2.62.2.72.2.82.3.02.3.12.3.22.4.02.5.02.5.12.5.22.6.02.6.12.6.22.6.32.6.42.7.02.8.02.9.02.9.1	2.11.3
`zip4j` Ubuntu:20.04:LTS	All versions, plus listed versions 2.1.2-22.2.2-12.2.6-12.2.8-1	None known
`zip4j` Ubuntu:22.04:LTS	All versions, plus listed versions 2.6.4-12.9.0-12.9.1-1	None known
`zip4j` Ubuntu:24.04:LTS	All versions, plus listed versions 2.11.5-1	None known
`zip4j` Ubuntu:25.10	All versions, plus listed versions 2.11.5-1	None known
`zip4j` Ubuntu:26.10	All versions, plus listed versions 2.11.6-1	None known
`zip4j` Ubuntu:26.04:LTS	All versions, plus listed versions 2.11.5-12.11.5-1build12.11.6-1	None known

History

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

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

In short

CVE-2023-22899 is a medium vulnerability (CVSS 5.9) in Zip4j Project Zip4j, published January 10, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.64%, the 51st percentile. Fixed in net.lingala.zip4j:zip4j 2.11.3.

References

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