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CVE-2023-22899 Zip4j

Affected softwareZip4j
Severity5.9 Medium CVSS 3.1 2 scores
Fixed in2.11.3
WeaknessCWE-346
Published10 Jan 2023
Updated17 Jun 2026

Description

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

Exploitation status

Proof of concept only

A proof of concept exists, but no reviewed exploit catalogue lists this CVE.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: poc CISA recorded that an exploit has been demonstrated. Automatable: no, technical impact: partial.
  • Indexed PoC none indexed
  • EPSS 0.67% chance in 30 days

Waratek protection

No exploit published

Within Waratek scope. In the sources we check, nobody has published exploit code for this CVE or reported it being exploited.

A public code fix exists.

  • Protection none
  • Action unverified
  • Review automated Upstream data
  • Record active
Decided by Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all
Finding This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.

CVSS

5.9 MEDIUM v3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 5.9 MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N NVD Primary published
CVSS 3.1 5.9 MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N CISA-ADP Secondary

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update July 2023 ↗ CPU 2023-Q3 Oracle Fusion Middleware / Third Party (Zip4j) (12.2.1.4.0)
Oracle Critical Patch Update April 2023 ↗ CPU 2023-Q2 Oracle Fusion Middleware / Third Party (Zip4j) (12.2.1.4.0)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle Fusion Middleware Third Party (Zip4j) 12.2.1.4.0 12.2.1.4.0

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
net.lingala.zip4j:zip4j 0 2.11.3 unbounded

Products and versions

2 products, 2 version entries
SourceVendorProductSchemeAffected versions
osv net.lingala.zip4j zip4j generic < 2.11.3
nvd zip4j project zip4j generic ≤ 2.11.2

References

URLTags
https://github.com/srikanth-lingala/zip4j/issues/485 WEB
https://breakingthe3ma.app WEB
https://breakingthe3ma.app/files/Threema-PST22.pdf WEB
https://github.com/srikanth-lingala/zip4j PACKAGE
https://github.com/srikanth-lingala/zip4j/releases WEB
https://github.com/srikanth-lingala/zip4j/releases/tag/v2.11.3 WEB
https://news.ycombinator.com/item?id=34316206 WEB
https://threema.ch/en/blog/posts/news-alleged-weaknesses-statement WEB

Timeline

Published2023-01-10By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.