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Fencer Vulns
medium 5.9

CVE-2023-22899 json

Zip4j Origin Validation Error

published 2023-01-10 3 y ago modified 2026-06-17 4 mo ago also GHSA-2pj2-gchf-wmw7 , EUVD-2023-0309

cvss
5.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 51%
public exploits
0
none known

Summary

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

Patch / fix

  • maven net.lingala.zip4j:zip4j 2.11.3
  • zip4j Debian 14, Debian 13, Debian 12 2.11.2-3

debian advisories DEBIAN-CVE-2023-22899

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-22899 updated cvss 5.9

zip4j: does not always check the MAC when decrypting a ZIP archive

  • Red Hat Decision Manager 7 org.drools-droolsjbpm-integration org.drools-droolsjbpm-integration
    affected: no fix planned “Out of support scope”
  • Red Hat Migration Toolkit for Runtimes 1 on RHEL 8
    fixed: vendor fix RHSA-2023:3814
  • Red Hat MTA 6.2 for RHEL 8 mta/mta-operator-bundle 6.2.0-29
    fixed: vendor fix RHSA-2023:4627
  • Red Hat MTA 6.2 for RHEL 8 mta/mta-ui-rhel9 6.2.0-17, mta/mta-hub-rhel9 6.2.0-16, mta/mta-rhel8-operator 6.2.0-12, mta/mta-pathfinder-rhel9 6.2.0-5, mta/mta-windup-addon-rhel9 6.2.0-11
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
19 mo ago

Exploit prediction

0.64% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/srikanth-lingala/zip4j/issues/485 referenced PoC, tagged "exploit" by a source, unverified
  • breakingthe3ma.app https://breakingthe3ma.app/files/Threema-PST22.pdf referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CNA 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
GitHub 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
maven net.lingala.zip4j:zip4j
<2.11.3
2.11.3

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.